diff --git a/backend/scene-types/base.ts b/backend/scene-types/base.ts
index f29c9ba..80251d7 100644
--- a/backend/scene-types/base.ts
+++ b/backend/scene-types/base.ts
@@ -3,7 +3,7 @@ import type { SceneDefinitionBase } from "../../shared/script/types"
 import type { SessionId } from "../session"
 
 export interface SceneType<DefinitionT extends SceneDefinitionBase, StateT extends SceneState> {
-    id: DefinitionT["id"]
+    id: DefinitionT["type"]
     createState(game: Game, definition: DefinitionT): StateT
 }
 
diff --git a/backend/trpc/index.ts b/backend/trpc/index.ts
index 1f05eaf..4122b06 100644
--- a/backend/trpc/index.ts
+++ b/backend/trpc/index.ts
@@ -3,6 +3,7 @@ import { playerRouter } from "./player"
 import { crewRouter } from "./crew"
 import { game } from "../game"
 import { on } from "node:events"
+import type { PlayerBroadcast } from "../../shared/broadcast"
 
 export const appRouter = t.router({
     player: playerRouter,
@@ -21,7 +22,7 @@ export const appRouter = t.router({
             }
 
             for await (const broadcast of iterable) {
-                yield broadcast
+                yield broadcast as unknown as PlayerBroadcast
             }
         }),
 })
diff --git a/frontend/App.vue b/frontend/App.vue
index 572e35c..df5685b 100644
--- a/frontend/App.vue
+++ b/frontend/App.vue
@@ -157,7 +157,7 @@
     onStarted: () => {
       isLoading.value = false
     },
-    onData: game.handleGameEvent,
+    onData: game.handlePlayerBroadcast,
     onError: error => {
       console.error("🔴", error)
     },
diff --git a/frontend/game.ts b/frontend/game.ts
index 720e13e..e8645ca 100644
--- a/frontend/game.ts
+++ b/frontend/game.ts
@@ -1,99 +1,16 @@
 import { defineStore } from "pinia"
-import { computed, reactive, ref } from "vue"
+import { computed, ref } from "vue"
 import { script } from "../shared/script"
-import type { SceneObjectDefinition, Interaction, InteractionQueueItem } from "../shared/script/types"
-import { trpcClient } from "./trpc"
 import type { PlayerBroadcast } from "../shared/broadcast"
-import { getInteractionQueueItemId } from "../shared/util"
 
 export const useGame = defineStore("gameState", () => {
-    const currentRoom = computed(() => script.roomsById.get(currentRoomId.value)!)
-    const currentRoomId = ref(script.roomsById.values().next().value!.id)
-
-    const currentInteraction = ref<null | Interaction>(null)
-    const currentInteractionId = computed(() =>
-        currentInteraction.value === null ? null : getInteractionQueueItemId(currentInteraction.value))
-
-    const interactionQueue = reactive(new Map<string, InteractionQueueItem>())
-    const sortedInteractionQueue = computed(() =>
-        [...interactionQueue.values()].sort((a, b) => b.votes - a.votes))
-
-    const visibleObjectIds = reactive(new Set<string>())
+    const currentSceneId = ref(script.scenesById.values().next().value!.id)
+    const currentScene = computed(() => script.scenesById.get(currentSceneId.value)!)
 
     return {
-        currentRoomId,
-        currentRoom,
-        interactionQueue,
-        visibleObjectIds,
-        sortedInteractionQueue,
-        allObjectsById: computed(() => {
-            const map = new Map<string, SceneObjectDefinition>()
-            currentRoom.value.initialObjects.forEach(o => map.set(o.id, o))
-            currentRoom.value.hiddenObjects.forEach(o => map.set(o.id, o))
-            return map
-        }),
-        visibleObjectsById: computed(() => {
-            const map = new Map<string, SceneObjectDefinition>()
-            currentRoom.value.initialObjects.values().filter(o => visibleObjectIds.has(o.id)).forEach(o => map.set(o.id, o))
-            currentRoom.value.hiddenObjects.values().filter(o => visibleObjectIds.has(o.id)).forEach(o => map.set(o.id, o))
-            return map
-        }),
-        currentInteraction,
-        currentInteractionId,
-        voteForInteraction(interaction: Interaction) {
-            if (currentInteractionId.value === getInteractionQueueItemId(interaction)) return
-            if (currentInteractionId.value !== null) trpcClient.player.removeInteractionVote.mutate({ queueItemId: currentInteractionId.value })
-            currentInteraction.value = interaction
-            trpcClient.player.voteForInteraction.mutate({ interaction })
-        },
-        revokeCurrentInteractionVote() {
-            if (currentInteractionId.value === null) return
-            trpcClient.player.removeInteractionVote.mutate({ queueItemId: currentInteractionId.value })
-            currentInteraction.value = null
-        },
-        switchRoom(roomId: string) {
-            trpcClient.director.switchRoom.mutate({ roomId })
-        },
-        activateInteractionQueueItem(id: string) {
-            trpcClient.director.activateInteractionQueueItem.mutate({ id })
-        },
-        removeInteractionQueueItem(id: string) {
-            trpcClient.director.removeInteractionQueueItem.mutate({ id })
-        },
-        setObjectVisibility(id: string, isVisible: boolean) {
-            trpcClient.director.setObjectVisibility.mutate({ id, isVisible })
-        },
-        handleGameEvent(event: PlayerBroadcast) {
-            console.log(event)
-            switch (event.type) {
-                case "room-changed":
-                    currentInteraction.value = null
-                    currentRoomId.value = event.roomId
-                    interactionQueue.clear()
-
-                    visibleObjectIds.clear()
-                    currentRoom.value.initialObjects.forEach(o => visibleObjectIds.add(o.id))
-                    break
-
-                case "interaction-queued":
-                    interactionQueue.set(event.item.id, event.item)
-                    break
-
-                case "interaction-votes-changed":
-                    if (event.votes <= 0) {
-                        interactionQueue.delete(event.id)
-                        if (currentInteractionId.value === event.id) currentInteraction.value = null
-                    } else {
-                        interactionQueue.get(event.id)!.votes = event.votes
-                    }
-
-                    break
-
-                case "object-visibility-changed":
-                    if (event.isVisible) visibleObjectIds.add(event.id)
-                    else visibleObjectIds.delete(event.id)
-                    break
-            }
+        currentScene,
+        handlePlayerBroadcast(broadcast: PlayerBroadcast) {
+            console.log(broadcast)
         }
     }
 })
\ No newline at end of file
diff --git a/frontend/scene-types/base.ts b/frontend/scene-types/base.ts
new file mode 100644
index 0000000..9046f07
--- /dev/null
+++ b/frontend/scene-types/base.ts
@@ -0,0 +1,12 @@
+import type { SceneDefinitionBase } from "../../shared/script/types"
+import type { Component } from "vue"
+
+export interface SceneType<DefinitionT extends SceneDefinitionBase, ControllerT extends SceneController> {
+    id: DefinitionT["type"]
+    playerView: Component<{ controller: ControllerT }>
+    createController(definition: DefinitionT): ControllerT
+}
+
+export interface SceneController<EventT = any> {
+    handleEvent(event: EventT): void
+}
\ No newline at end of file
diff --git a/frontend/scene-types/index.ts b/frontend/scene-types/index.ts
new file mode 100644
index 0000000..79b1407
--- /dev/null
+++ b/frontend/scene-types/index.ts
@@ -0,0 +1,5 @@
+import { TextSceneType } from "./text/text"
+
+export const sceneTypesById = {
+    "text": TextSceneType,
+} as const
\ No newline at end of file
diff --git a/frontend/scene-types/text/PlayerView.vue b/frontend/scene-types/text/PlayerView.vue
new file mode 100644
index 0000000..edea242
--- /dev/null
+++ b/frontend/scene-types/text/PlayerView.vue
@@ -0,0 +1,15 @@
+<template>
+
+</template>
+
+<style module lang="scss">
+
+</style>
+
+<script setup lang="ts">
+  import type { TextSceneController } from "./text"
+
+  const props = defineProps<{
+    controller: TextSceneController
+  }>()
+</script>
\ No newline at end of file
diff --git a/frontend/scene-types/text/text.ts b/frontend/scene-types/text/text.ts
new file mode 100644
index 0000000..146afd6
--- /dev/null
+++ b/frontend/scene-types/text/text.ts
@@ -0,0 +1,20 @@
+import type { SceneController, SceneType } from "../base"
+import type { TextSceneDefinition } from "../../../shared/script/types"
+import type { TextSceneEvent } from "../../../shared/scene-types/text"
+import PlayerView from "./PlayerView.vue"
+
+export const TextSceneType: SceneType<TextSceneDefinition, TextSceneController> = {
+    id: "text",
+    playerView: PlayerView,
+    createController(definition: TextSceneDefinition): TextSceneController {
+        return {
+            handleEvent(event: TextSceneEvent) {
+
+            }
+        }
+    }
+}
+
+export interface TextSceneController extends SceneController {
+
+}
\ No newline at end of file
diff --git a/shared/script/index.ts b/shared/script/index.ts
index 7bf1078..3d97e47 100644
--- a/shared/script/index.ts
+++ b/shared/script/index.ts
@@ -1,12 +1,18 @@
 import type { Script } from "./types"
-import { roomHauseingang } from "./rooms/hauseingang"
-import { roomKueche } from "./rooms/küche"
+import { scenePreStart } from "./scenes/pre-start"
+import { sceneTutorialKettensaege } from "./scenes/tutorial-kettensaege"
+import { sceneTutorialMuesli } from "./scenes/tutorial-muesli"
+import { sceneTutorialVorhang } from "./scenes/tutorial-vorhang"
+import { sceneChoiceTest } from "./scenes/choice-test"
 
 const script: Script = {
     scenesById: new Map()
 }
 
-script.scenesById.set(roomHauseingang.id, roomHauseingang)
-script.scenesById.set(roomKueche.id, roomKueche)
+script.scenesById.set(scenePreStart.id, scenePreStart)
+script.scenesById.set(sceneTutorialKettensaege.id, sceneTutorialKettensaege)
+script.scenesById.set(sceneTutorialMuesli.id, sceneTutorialMuesli)
+script.scenesById.set(sceneTutorialVorhang.id, sceneTutorialVorhang)
+script.scenesById.set(sceneChoiceTest.id, sceneChoiceTest)
 
 export { script }
\ No newline at end of file
diff --git a/shared/script/rooms/hauseingang.ts b/shared/script/rooms/hauseingang.ts
deleted file mode 100644
index 186c095..0000000
--- a/shared/script/rooms/hauseingang.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import type { SceneDefinition } from "../types"
-import { cSet } from "../../util"
-
-export const roomHauseingang: SceneDefinition = {
-    id: "hauseingang",
-    label: "Hauseingang",
-    initialObjects: cSet(
-        {
-            id: "schlüssel",
-            label: "Schlüssel",
-        },
-        {
-            id: "haustür",
-            label: "Haustür"
-        }
-    ),
-    hiddenObjects: cSet(
-        {
-            id: "offene-haustür",
-            label: "Offene Haustür"
-        }
-    ),
-    combinations: cSet(
-        {
-            id: "open-door",
-            inputs: cSet(
-                {
-                    objectId: "schlüssel",
-                    isConsumed: false
-                },
-                {
-                    objectId: "haustür",
-                    isConsumed: true
-                }
-            ),
-            outputIds: cSet(
-                "offene-haustür"
-            )
-        }
-    )
-}
\ No newline at end of file
diff --git a/shared/script/rooms/küche.ts b/shared/script/rooms/küche.ts
deleted file mode 100644
index c5ff92f..0000000
--- a/shared/script/rooms/küche.ts
+++ /dev/null
@@ -1,49 +0,0 @@
-import type { SceneDefinition } from "../types"
-import { cSet } from "../../util"
-
-export const roomKueche: SceneDefinition = {
-    id: "küche",
-    label: "Küche",
-    initialObjects: cSet(
-        {
-            id: "schüssel",
-            label: "Schüssel"
-        },
-        {
-            id: "kühlschrank",
-            label: "Kühlschrank"
-        },
-        {
-            id: "kakaopulver",
-            label: "Kakaopulver"
-        }
-    ),
-    hiddenObjects: cSet(
-        {
-            id: "milch",
-            label: "Milch"
-        },
-        {
-            id: "kakao",
-            label: "Kakao"
-        }
-    ),
-    combinations: cSet(
-        {
-            id: "kakao",
-            inputs: cSet(
-                {
-                    objectId: "milch",
-                    isConsumed: true
-                },
-                {
-                    objectId: "kakaopulver",
-                    isConsumed: false
-                }
-            ),
-            outputIds: cSet(
-                "kakao"
-            )
-        }
-    )
-}
\ No newline at end of file
diff --git a/shared/script/scenes/choice-test.ts b/shared/script/scenes/choice-test.ts
new file mode 100644
index 0000000..fcc3bc4
--- /dev/null
+++ b/shared/script/scenes/choice-test.ts
@@ -0,0 +1,19 @@
+import { Temporal } from "temporal-polyfill"
+import type { SceneDefinition } from "../types"
+
+export const sceneChoiceTest: SceneDefinition = {
+    id: "choice-test",
+    type: "choice",
+    label: "Auswahl-Test",
+    plannedDuration: Temporal.Duration.from({ seconds: 30 }),
+    options: [
+        {
+            id: "a",
+            label: "Option A"
+        },
+        {
+            id: "b",
+            label: "Option B"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/shared/script/scenes/pre-start.ts b/shared/script/scenes/pre-start.ts
new file mode 100644
index 0000000..db5869b
--- /dev/null
+++ b/shared/script/scenes/pre-start.ts
@@ -0,0 +1,9 @@
+import type { SceneDefinition } from "../types"
+
+export const scenePreStart: SceneDefinition = {
+    id: "pre-start",
+    type: "text",
+    label: "Vor Beginn",
+    plannedDuration: null,
+    text: "Die Vorstellung hat noch nicht begonnen."
+}
\ No newline at end of file
diff --git a/shared/script/scenes/tutorial-kettensaege.ts b/shared/script/scenes/tutorial-kettensaege.ts
new file mode 100644
index 0000000..2d7a19c
--- /dev/null
+++ b/shared/script/scenes/tutorial-kettensaege.ts
@@ -0,0 +1,37 @@
+import { Temporal } from "temporal-polyfill"
+import { type SceneDefinition } from "../types"
+import { defineInteractionScene } from "../types"
+
+export const sceneTutorialKettensaege: SceneDefinition = defineInteractionScene({
+    id: "tutorial-kettensaege",
+    type: "interaction",
+    label: "Tutorial: Kettensäge",
+    plannedDuration: Temporal.Duration.from({ minutes: 8 }),
+    objects: {
+        kettensaege: {
+            label: "Kettensäge",
+            reveal: true,
+        },
+        redner: {
+            label: "Redner",
+            reveal: true,
+        }
+    },
+    interactions: [
+        {
+            type: "combine",
+            inputObjects: {
+                "kettensaege": { consume: false },
+                "redner": { consume: true },
+            },
+            outputObjectIds: [],
+            note: "Bei den ersten zwei Versuchen unterbricht der Redner Faba, bevor er ihn verjagen kann. Beim dritten Mal flüchtet der Redner dann."
+        },
+        {
+            type: "use",
+            objectId: "kettensaege",
+            consume: false,
+            revealedObjectIds: []
+        }
+    ]
+})
\ No newline at end of file
diff --git a/shared/script/scenes/tutorial-muesli.ts b/shared/script/scenes/tutorial-muesli.ts
new file mode 100644
index 0000000..a6b6ce6
--- /dev/null
+++ b/shared/script/scenes/tutorial-muesli.ts
@@ -0,0 +1,129 @@
+import { Temporal } from "temporal-polyfill"
+import { defineInteractionScene, type SceneDefinition } from "../types"
+
+export const sceneTutorialMuesli: SceneDefinition = defineInteractionScene({
+    id: "tutorial-muesli",
+    type: "interaction",
+    label: "Tutorial: Müsli",
+    plannedDuration: Temporal.Duration.from({ minutes: 8 }),
+    objects: {
+        "escobar": {
+            label: "Escobar",
+            reveal: true,
+        },
+        "kuehlschrank": {
+            label: "Kühlschrank",
+            reveal: true,
+        },
+        "peruecke": {
+            label: "Perücke",
+            reveal: true,
+        },
+        "thunfisch": {
+            label: "Thunfisch",
+            reveal: false,
+        },
+        "haferflocken": {
+            label: "Haferflocken",
+            reveal: false,
+        },
+        "milch": {
+            label: "Milch",
+            reveal: false,
+        },
+        "h-milch": {
+            label: "H-Milch",
+            reveal: false,
+        },
+        "kaffeebohnen": {
+            label: "Kaffeebohnen",
+            reveal: false,
+        },
+        "muesli-unfertig": {
+            label: "Muesli (unfertig)",
+            reveal: true,
+            completion: {
+                replaceWith: "muesli",
+                steps: 3
+            }
+        },
+        "muesli": {
+            label: "Müsli",
+            reveal: false
+        }
+    },
+    interactions: [
+        {
+            type: "use",
+            objectId: "kuehlschrank",
+            consume: false,
+            revealedObjectIds: ["milch", "thunfisch", "haferflocken", "kaffeebohnen"],
+        },
+        {
+            type: "combine",
+            inputObjects: {
+                "escobar": { consume: false },
+                "kuehlschrank": { consume: false },
+            },
+            outputObjectIds: [],
+            note: "»Was sagst du Escobar, dir ist es hier zu warm?«"
+        },
+        {
+            type: "combine",
+            inputObjects: {
+                "kaffeebohnen": { consume: true },
+                "muesli-unfertig": { consume: false }
+            },
+            outputObjectIds: ["muesli-unfertig"]
+        },
+        {
+            type: "combine",
+            inputObjects: {
+                "thunfisch": { consume: true },
+                "muesli-unfertig": { consume: false }
+            },
+            outputObjectIds: ["muesli-unfertig"]
+        },
+        {
+            type: "combine",
+            inputObjects: {
+                "haferflocken": { consume: true },
+                "muesli-unfertig": { consume: false }
+            },
+            outputObjectIds: ["muesli-unfertig"]
+        },
+        {
+            type: "combine",
+            inputObjects: {
+                "milch": { consume: false },
+                "muesli-unfertig": { consume: false }
+            },
+            outputObjectIds: [],
+            note: "Leider ist die Milch schon abgelaufen. → Duo: »Hätten wir nur H-Milch besorgt.«"
+        },
+        {
+            type: "use",
+            objectId: "milch",
+            consume: false,
+            revealedObjectIds: [],
+            note: "Leider ist die Milch schon abgelaufen. → Duo: »Hätten wir nur H-Milch besorgt.«"
+        },
+        {
+            type: "combine",
+            inputObjects: {
+                "milch": { consume: true },
+                "peruecke": { consume: true }
+            },
+            outputObjectIds: ["h-milch"],
+            note: "Ein Haar der Perücke in der Milch → H-Milch"
+        },
+        {
+            type: "combine",
+            inputObjects: {
+                "h-milch": { consume: true },
+                "muesli-unfertig": { consume: false }
+            },
+            outputObjectIds: ["muesli-unfertig"]
+        }
+    ]
+})
\ No newline at end of file
diff --git a/shared/script/scenes/tutorial-vorhang.ts b/shared/script/scenes/tutorial-vorhang.ts
new file mode 100644
index 0000000..ac7fa35
--- /dev/null
+++ b/shared/script/scenes/tutorial-vorhang.ts
@@ -0,0 +1,29 @@
+import { Temporal } from "temporal-polyfill"
+import { defineInteractionScene, type SceneDefinition } from "../types"
+
+export const sceneTutorialVorhang: SceneDefinition = defineInteractionScene({
+    id: "tutorial-vorhang",
+    type: "interaction",
+    label: "Tutorial: Vorhang",
+    plannedDuration: Temporal.Duration.from({ seconds: 30 }),
+    objects: {
+        "buehnenbildner": {
+            label: "Bühnenbildner",
+            reveal: true
+        },
+        "vorhang": {
+            label: "Vorhang",
+            reveal: true
+        }
+    },
+    interactions: [
+        {
+            type: "combine",
+            inputObjects: {
+                "buehnenbildner": { consume: true },
+                "vorhang": { consume: true },
+            },
+            outputObjectIds: [],
+        },
+    ]
+})
\ No newline at end of file
diff --git a/shared/script/types.ts b/shared/script/types.ts
index 1d5785a..0b98c41 100644
--- a/shared/script/types.ts
+++ b/shared/script/types.ts
@@ -1,7 +1,6 @@
 import { Temporal } from "temporal-polyfill"
-import type { Exact } from "type-fest"
 import { getSuggestedInteractionFromDefinition, getSuggestedInteractionId } from "../scene-types/interaction"
-import type { IdMap } from "../util"
+import { cMap, cSet } from "../util"
 
 export interface Script {
     scenesById: Map<string, SceneDefinition>
@@ -9,45 +8,88 @@ export interface Script {
 
 export interface SceneDefinitionBase {
     id: string
+    type: string
     label: string
-    plannedDuration: Temporal.Duration
+    plannedDuration: Temporal.Duration | null
 }
 
-export const defineInteractionScene = <ObjectIds extends string>(d: SceneDefinitionBase & {
+export const defineInteractionScene = <ObjectsT extends Record<string, SceneObjectDefinition<keyof ObjectsT & string>>>(d: SceneDefinitionBase & {
     type: "interaction"
-    objects: IdMap<SceneObjectDefinition & { id: ObjectIds }>
-    interactions: Array<UseInteractionDefinition<ObjectIds> | CombineInteractionDefinition<ObjectIds>>
-}) => ({
+    objects: ObjectsT
+    interactions: Array<RawUseInteractionDefinition<keyof ObjectsT & string> | RawCombineInteractionDefinition<keyof ObjectsT & string>>
+}): InteractionSceneDefinition<keyof ObjectsT & string> => ({
     ...d,
-    interactionsById: new Map(d.interactions.map(i => [getSuggestedInteractionId(getSuggestedInteractionFromDefinition(i)), i]))
+    objectsById: cMap(d.objects),
+    interactionsById: new Map(d.interactions.values().map(raw => {
+        let i: UseInteractionDefinition<keyof ObjectsT & string> | CombineInteractionDefinition<keyof ObjectsT & string>
+        switch (raw.type) {
+            case "use":
+                i = {
+                    type: "use",
+                    objectId: raw.objectId,
+                    consume: raw.consume,
+                    revealedObjectIds: cSet(...raw.revealedObjectIds),
+                    note: raw.note
+                }
+                break
+
+            case "combine":
+                i = {
+                    type: "combine",
+                    inputObjects: cMap(raw.inputObjects),
+                    outputObjectIds: cSet(...raw.outputObjectIds),
+                    note: raw.note
+                }
+        }
+        return [getSuggestedInteractionId(getSuggestedInteractionFromDefinition(i)), i]
+    }))
 })
 
 export interface InteractionSceneDefinition<ObjectIds extends string = string> extends SceneDefinitionBase {
     type: "interaction"
-    objects: IdMap<SceneObjectDefinition & { id: ObjectIds }>
+    objectsById: Map<ObjectIds, SceneObjectDefinition<ObjectIds>>
     interactionsById: Map<string, UseInteractionDefinition<ObjectIds> | CombineInteractionDefinition<ObjectIds>>
 }
 
-export interface SceneObjectDefinition {
-    id: string
+export interface SceneObjectDefinition<AvailableObjectIds extends string = string> {
     label: string
     reveal: boolean
-    relevant: boolean
-    completionSteps?: number
+    completion?: SceneObjectDefinitionCompletionOptions<AvailableObjectIds>
+}
+
+export interface SceneObjectDefinitionCompletionOptions<AvailableObjectIds extends string = string> {
+    steps: number
+    replaceWith: AvailableObjectIds
+}
+
+interface RawUseInteractionDefinition<AvailableObjectIds extends string> {
+    type: "use"
+    objectId: AvailableObjectIds
+    consume: boolean
+    revealedObjectIds: Array<AvailableObjectIds>
+    note?: string
 }
 
 export interface UseInteractionDefinition<AvailableObjectIds extends string> {
     type: "use"
     objectId: AvailableObjectIds
     consume: boolean
-    note: string
+    revealedObjectIds: Set<AvailableObjectIds>
+    note?: string
+}
+
+interface RawCombineInteractionDefinition<AvailableObjectIds extends string> {
+    type: "combine"
+    inputObjects: Partial<Record<AvailableObjectIds, CombinationInteractionDefinitionInputOptions>>
+    outputObjectIds: Array<AvailableObjectIds>
+    note?: string
 }
 
 export interface CombineInteractionDefinition<AvailableObjectIds extends string> {
     type: "combine"
     inputObjects: Map<AvailableObjectIds, CombinationInteractionDefinitionInputOptions>
     outputObjectIds: Set<AvailableObjectIds>
-    note: string
+    note?: string
 }
 
 export interface CombinationInteractionDefinitionInputOptions {
diff --git a/shared/util.ts b/shared/util.ts
index f783396..e48aa0d 100644
--- a/shared/util.ts
+++ b/shared/util.ts
@@ -1,19 +1,7 @@
-export type IdMap<T extends { id: string }> = Map<T["id"], T>
-
 export const cSet = <T>(...values: T[]) => new Set(values)
 
-export const cMap = <K extends string, V>(object: Record<K, V>): Map<K, V> => {
+export const cMap = <K extends string, V>(object: Partial<Record<K, V>>): Map<K, V> => {
     const result = new Map<K, V>();
-    for (const key in object) {
-        result.set(key, object[key])
-    }
-    return result
-}
-
-export const cIdMap = <K extends string, V extends { id: K }>(...values: V[]) => {
-    const result = new Map<K, V>();
-    for (const value of values) {
-        result.set(value.id, value)
-    }
+    Object.entries(object).forEach(([k, v]) => result.set(k as K, v as V))
     return result
 }
\ No newline at end of file