diff --git a/src/ts/missions/mission.ts b/src/ts/missions/mission.ts
index 6e2815a2..572e6bbe 100644
--- a/src/ts/missions/mission.ts
+++ b/src/ts/missions/mission.ts
@@ -20,14 +20,14 @@ export type MissionSerialized = {
     reward: number;
 };
 
-export class Mission implements Mission {
-    private readonly tree: MissionNode;
+export class Mission {
+    readonly tree: MissionNode;
 
-    private readonly reward: number;
+    readonly reward: number;
 
-    private readonly missionGiver: SpaceStationModel;
+    readonly missionGiver: SpaceStationModel;
 
-    private readonly missionType: MissionType;
+    readonly missionType: MissionType;
 
     constructor(tree: MissionNode, reward: number, missionGiver: SpaceStationModel, missionType: MissionType) {
         this.tree = tree;
@@ -41,11 +41,7 @@ export class Mission implements Mission {
     }
 
     equals(other: Mission): boolean {
-        return false;
-    }
-
-    getMissionGiver(): SpaceStationModel {
-        return this.missionGiver;
+        return this.tree.equals(other.tree);
     }
 
     getReward(): number {
diff --git a/src/ts/missions/nodes/actions/sightseeing/missionAsteroidFieldNode.ts b/src/ts/missions/nodes/actions/sightseeing/missionAsteroidFieldNode.ts
index bd9c7898..84245353 100644
--- a/src/ts/missions/nodes/actions/sightseeing/missionAsteroidFieldNode.ts
+++ b/src/ts/missions/nodes/actions/sightseeing/missionAsteroidFieldNode.ts
@@ -1,6 +1,6 @@
 import { MissionNode, MissionNodeSerialized, MissionNodeType } from "../../missionNode";
 import { MissionContext } from "../../../missionContext";
-import { UniverseObjectId } from "../../../../saveFile/universeCoordinates";
+import { UniverseObjectId, universeObjectIdEquals } from "../../../../saveFile/universeCoordinates";
 import { SeededStarSystemModel } from "../../../../starSystem/seededStarSystemModel";
 import { SystemSeed } from "../../../../utils/systemSeed";
 import { Vector3 } from "@babylonjs/core/Maths/math.vector";
@@ -45,6 +45,11 @@ export class MissionAsteroidFieldNode implements MissionNode {
         return this.state === AsteroidFieldMissionState.CLOSE_ENOUGH;
     }
 
+    equals(other: MissionNode): boolean {
+        if (!(other instanceof MissionAsteroidFieldNode)) return false;
+        return universeObjectIdEquals(this.objectId, other.objectId);
+    }
+
     updateState(context: MissionContext) {
         if (this.isCompleted()) return;
 
@@ -103,7 +108,7 @@ export class MissionAsteroidFieldNode implements MissionNode {
         return i18n.t("missions:sightseeing:describeAsteroidFieldTrek", {
             objectName: objectModel.name,
             systemName: systemModel.name,
-            distance: distance > 0 ? parseDistance(distance * Settings.LIGHT_YEAR): i18n.t("missions:common:here")
+            distance: distance > 0 ? parseDistance(distance * Settings.LIGHT_YEAR) : i18n.t("missions:common:here")
         });
     }
 
diff --git a/src/ts/missions/nodes/actions/sightseeing/missionFlyByNode.ts b/src/ts/missions/nodes/actions/sightseeing/missionFlyByNode.ts
index 5929ff81..716cbf58 100644
--- a/src/ts/missions/nodes/actions/sightseeing/missionFlyByNode.ts
+++ b/src/ts/missions/nodes/actions/sightseeing/missionFlyByNode.ts
@@ -1,6 +1,6 @@
 import { MissionNode, MissionNodeSerialized, MissionNodeType } from "../../missionNode";
 import { MissionContext } from "../../../missionContext";
-import { UniverseObjectId } from "../../../../saveFile/universeCoordinates";
+import { UniverseObjectId, universeObjectIdEquals } from "../../../../saveFile/universeCoordinates";
 import { SeededStarSystemModel } from "../../../../starSystem/seededStarSystemModel";
 import { SystemSeed } from "../../../../utils/systemSeed";
 import { Vector3 } from "@babylonjs/core/Maths/math.vector";
@@ -44,6 +44,11 @@ export class MissionFlyByNode implements MissionNode {
         return this.state === FlyByState.CLOSE_ENOUGH;
     }
 
+    equals(other: MissionNode): boolean {
+        if (!(other instanceof MissionFlyByNode)) return false;
+        return universeObjectIdEquals(this.objectId, other.objectId);
+    }
+
     updateState(context: MissionContext) {
         if (this.isCompleted()) return;
 
@@ -82,7 +87,7 @@ export class MissionFlyByNode implements MissionNode {
         return i18n.t("missions:sightseeing:describeFlyBy", {
             objectType: objectModel.typeName.toLowerCase(),
             systemName: systemModel.name,
-            distance: distance > 0 ? parseDistance(distance * Settings.LIGHT_YEAR): i18n.t("missions:common:here")
+            distance: distance > 0 ? parseDistance(distance * Settings.LIGHT_YEAR) : i18n.t("missions:common:here")
         });
     }
 
diff --git a/src/ts/missions/nodes/actions/sightseeing/missionTerminatorLandingNode.ts b/src/ts/missions/nodes/actions/sightseeing/missionTerminatorLandingNode.ts
index 873ad950..e2e488b1 100644
--- a/src/ts/missions/nodes/actions/sightseeing/missionTerminatorLandingNode.ts
+++ b/src/ts/missions/nodes/actions/sightseeing/missionTerminatorLandingNode.ts
@@ -1,6 +1,6 @@
 import { MissionNode, MissionNodeSerialized, MissionNodeType } from "../../missionNode";
 import { MissionContext } from "../../../missionContext";
-import { UniverseObjectId } from "../../../../saveFile/universeCoordinates";
+import { UniverseObjectId, universeObjectIdEquals } from "../../../../saveFile/universeCoordinates";
 import { SeededStarSystemModel } from "../../../../starSystem/seededStarSystemModel";
 import { SystemSeed } from "../../../../utils/systemSeed";
 import { Vector3 } from "@babylonjs/core/Maths/math.vector";
@@ -47,6 +47,11 @@ export class MissionTerminatorLandingNode implements MissionNode {
         return this.state === LandMissionState.LANDED;
     }
 
+    equals(other: MissionNode): boolean {
+        if (!(other instanceof MissionTerminatorLandingNode)) return false;
+        return universeObjectIdEquals(this.objectId, other.objectId);
+    }
+
     updateState(context: MissionContext) {
         if (this.isCompleted()) return;
 
@@ -111,7 +116,7 @@ export class MissionTerminatorLandingNode implements MissionNode {
         return i18n.t("missions:sightseeing:describeTerminatorLanding", {
             objectName: objectModel.name,
             systemName: systemModel.name,
-            distance: distance > 0 ? parseDistance(distance * Settings.LIGHT_YEAR): i18n.t("missions:common:here")
+            distance: distance > 0 ? parseDistance(distance * Settings.LIGHT_YEAR) : i18n.t("missions:common:here")
         });
     }
 
diff --git a/src/ts/missions/nodes/logic/missionAndNode.ts b/src/ts/missions/nodes/logic/missionAndNode.ts
index 91deb177..fad63e48 100644
--- a/src/ts/missions/nodes/logic/missionAndNode.ts
+++ b/src/ts/missions/nodes/logic/missionAndNode.ts
@@ -6,7 +6,7 @@ import i18n from "../../../i18n";
 export type MissionAndNodeSerialized = MissionNodeSerialized;
 
 export class MissionAndNode implements MissionNode {
-    public children: MissionNode[];
+    readonly children: MissionNode[];
 
     private hasCompletedLock = false;
 
@@ -18,6 +18,15 @@ export class MissionAndNode implements MissionNode {
         return this.hasCompletedLock;
     }
 
+    equals(other: MissionNode): boolean {
+        if (!(other instanceof MissionAndNode)) return false;
+        if (this.children.length !== other.children.length) return false;
+        for (let i = 0; i < this.children.length; i++) {
+            if (!this.children[i].equals(other.children[i])) return false;
+        }
+        return true;
+    }
+
     updateState(context: MissionContext) {
         if (this.hasCompletedLock) return;
         this.children.forEach((child) => child.updateState(context));
diff --git a/src/ts/missions/nodes/logic/missionOrNode.ts b/src/ts/missions/nodes/logic/missionOrNode.ts
index 3f354745..c789cb83 100644
--- a/src/ts/missions/nodes/logic/missionOrNode.ts
+++ b/src/ts/missions/nodes/logic/missionOrNode.ts
@@ -6,7 +6,7 @@ import { SystemSeed } from "../../../utils/systemSeed";
 export type MissionOrNodeSerialized = MissionNodeSerialized;
 
 export class MissionOrNode implements MissionNode {
-    public children: MissionNode[];
+    readonly children: MissionNode[];
 
     private hasCompletedLock = false;
 
@@ -18,6 +18,15 @@ export class MissionOrNode implements MissionNode {
         return this.hasCompletedLock;
     }
 
+    equals(other: MissionNode): boolean {
+        if (!(other instanceof MissionOrNode)) return false;
+        if (this.children.length !== other.children.length) return false;
+        for (let i = 0; i < this.children.length; i++) {
+            if (!this.children[i].equals(other.children[i])) return false;
+        }
+        return true;
+    }
+
     updateState(context: MissionContext) {
         if (this.hasCompletedLock) return;
         this.children.forEach((child) => child.updateState(context));
diff --git a/src/ts/missions/nodes/logic/missionSequenceNode.ts b/src/ts/missions/nodes/logic/missionSequenceNode.ts
index 694255ff..c9fa936e 100644
--- a/src/ts/missions/nodes/logic/missionSequenceNode.ts
+++ b/src/ts/missions/nodes/logic/missionSequenceNode.ts
@@ -21,6 +21,15 @@ export class MissionSequenceNode implements MissionNode {
         return this.hasCompletedLock;
     }
 
+    equals(other: MissionNode): boolean {
+        if (!(other instanceof MissionSequenceNode)) return false;
+        if (this.children.length !== other.children.length) return false;
+        for (let i = 0; i < this.children.length; i++) {
+            if (!this.children[i].equals(other.children[i])) return false;
+        }
+        return true;
+    }
+
     updateState(context: MissionContext) {
         if (this.hasCompletedLock) return;
         if (this.activeChildIndex >= this.children.length) return;
diff --git a/src/ts/missions/nodes/logic/missionXorNode.ts b/src/ts/missions/nodes/logic/missionXorNode.ts
index 1fb6b3a7..f6c9a873 100644
--- a/src/ts/missions/nodes/logic/missionXorNode.ts
+++ b/src/ts/missions/nodes/logic/missionXorNode.ts
@@ -5,7 +5,7 @@ import { SystemSeed } from "../../../utils/systemSeed";
 export type MissionXorNodeSerialized = MissionNodeSerialized;
 
 export class MissionXorNode implements MissionNode {
-    public children: MissionNode[];
+    readonly children: MissionNode[];
 
     private hasCompletedLock = false;
 
@@ -17,6 +17,15 @@ export class MissionXorNode implements MissionNode {
         return this.hasCompletedLock;
     }
 
+    equals(other: MissionNode): boolean {
+        if (!(other instanceof MissionXorNode)) return false;
+        if (this.children.length !== other.children.length) return false;
+        for (let i = 0; i < this.children.length; i++) {
+            if (!this.children[i].equals(other.children[i])) return false;
+        }
+        return true;
+    }
+
     updateState(context: MissionContext) {
         if (this.hasCompletedLock) return;
         this.children.forEach((child) => child.updateState(context));
diff --git a/src/ts/missions/nodes/missionNode.ts b/src/ts/missions/nodes/missionNode.ts
index b308cbf9..77267283 100644
--- a/src/ts/missions/nodes/missionNode.ts
+++ b/src/ts/missions/nodes/missionNode.ts
@@ -6,6 +6,8 @@ export interface MissionNode {
 
     updateState(context: MissionContext): void;
 
+    equals(other: MissionNode): boolean;
+
     describe(originSeed: SystemSeed): string;
 
     describeNextTask(context: MissionContext): Promise<string>;