diff --git a/src/client/Transport.ts b/src/client/Transport.ts
index 3bf4cca43..9c40e714e 100644
--- a/src/client/Transport.ts
+++ b/src/client/Transport.ts
@@ -9,6 +9,7 @@ import { UsernameInput } from "./UsernameInput";
 import { HostLobbyModal as HostPrivateLobbyModal } from "./HostLobbyModal";
 import { JoinPrivateLobbyModal } from "./JoinPrivateLobbyModal";
 import { SinglePlayerModal } from "./SinglePlayerModal";
+import { PlayerView } from "../core/GameView"
 
 export class PauseGameEvent implements GameEvent {
     constructor(public readonly paused: boolean) { }
@@ -16,23 +17,23 @@ export class PauseGameEvent implements GameEvent {
 
 export class SendAllianceRequestIntentEvent implements GameEvent {
     constructor(
-        public readonly requestor: Player,
-        public readonly recipient: Player
+        public readonly requestor: PlayerView,
+        public readonly recipient: PlayerView
     ) { }
 }
 
 export class SendBreakAllianceIntentEvent implements GameEvent {
     constructor(
-        public readonly requestor: Player,
-        public readonly recipient: Player
+        public readonly requestor: PlayerView,
+        public readonly recipient: PlayerView
     ) { }
 }
 
 export class SendAllianceReplyIntentEvent implements GameEvent {
     constructor(
         // The original alliance requestor
-        public readonly requestor: Player,
-        public readonly recipient: Player,
+        public readonly requestor: PlayerView,
+        public readonly recipient: PlayerView,
         public readonly accepted: boolean
     ) { }
 }
@@ -73,15 +74,15 @@ export class SendTargetPlayerIntentEvent implements GameEvent {
 
 export class SendEmojiIntentEvent implements GameEvent {
     constructor(
-        public readonly recipient: Player | typeof AllPlayers,
+        public readonly recipient: PlayerView | typeof AllPlayers,
         public readonly emoji: string
     ) { }
 }
 
 export class SendDonateIntentEvent implements GameEvent {
     constructor(
-        public readonly sender: Player,
-        public readonly recipient: Player,
+        public readonly sender: PlayerView,
+        public readonly recipient: PlayerView,
         public readonly troops: number | null,
     ) { }
 }
diff --git a/src/client/graphics/layers/NameLayer.ts b/src/client/graphics/layers/NameLayer.ts
index 8925f9a52..ebcca6449 100644
--- a/src/client/graphics/layers/NameLayer.ts
+++ b/src/client/graphics/layers/NameLayer.ts
@@ -31,14 +31,14 @@ export class NameLayer implements Layer {
     private renderRefreshRate = 500
     private rand = new PseudoRandom(10)
     private renders: RenderInfo[] = []
-    private seenPlayers: Set<Player> = new Set()
+    private seenPlayers: Set<PlayerView> = new Set()
     private traitorIconImage: HTMLImageElement;
     private allianceIconImage: HTMLImageElement;
     private targetIconImage: HTMLImageElement;
     private crownIconImage: HTMLImageElement;
     private container: HTMLDivElement
-    private myPlayer: Player | null = null
-    private firstPlace: Player | null = null
+    private myPlayer: PlayerView | null = null
+    private firstPlace: PlayerView | null = null
 
     constructor(private game: GameView, private theme: Theme, private transformHandler: TransformHandler, private clientID: ClientID) {
         this.traitorIconImage = new Image();
@@ -115,7 +115,7 @@ export class NameLayer implements Layer {
         )
     }
 
-    private createPlayerElement(player: Player): HTMLDivElement {
+    private createPlayerElement(player: PlayerView): HTMLDivElement {
         const element = document.createElement('div')
         element.style.position = 'absolute'
         element.style.display = 'flex'
@@ -281,7 +281,7 @@ export class NameLayer implements Layer {
         return icon
     }
 
-    private getPlayer(): Player | null {
+    private getPlayer(): PlayerView | null {
         if (this.myPlayer != null) {
             return this.myPlayer
         }
diff --git a/src/client/graphics/layers/PlayerInfoOverlay.ts b/src/client/graphics/layers/PlayerInfoOverlay.ts
index f1b9608e5..626ebadf1 100644
--- a/src/client/graphics/layers/PlayerInfoOverlay.ts
+++ b/src/client/graphics/layers/PlayerInfoOverlay.ts
@@ -6,7 +6,7 @@ import { ClientID } from '../../../core/Schemas';
 import { EventBus } from '../../../core/EventBus';
 import { TransformHandler } from '../TransformHandler';
 import { MouseMoveEvent } from '../../InputHandler';
-import { GameView, PlayerView } from '../../../core/GameView';
+import { GameView, PlayerView, UnitView } from '../../../core/GameView';
 import { TileRef } from '../../../core/game/GameMap';
 import { PauseGameEvent } from '../../Transport';
 import { renderNumber, renderTroops } from '../../Utils';
@@ -20,7 +20,7 @@ function euclideanDistWorld(coord: { x: number, y: number }, tileRef: TileRef, g
 }
 
 function distSortUnitWorld(coord: { x: number, y: number }, game: GameView) {
-    return (a: Unit, b: Unit) => {
+    return (a: Unit | UnitView, b: Unit | UnitView) => {
         const distA = euclideanDistWorld(coord, a.tile(), game);
         const distB = euclideanDistWorld(coord, b.tile(), game);
         return distA - distB;
@@ -42,13 +42,13 @@ export class PlayerInfoOverlay extends LitElement implements Layer {
     public transform!: TransformHandler;
 
     @state()
-    private player: Player | null = null;
+    private player: PlayerView | null = null;
 
     @state()
     private playerProfile: PlayerProfile | null = null;
 
     @state()
-    private unit: Unit | null = null;
+    private unit: UnitView | null = null;
 
     @state()
     private showPauseButton: boolean = true;
@@ -92,8 +92,8 @@ export class PlayerInfoOverlay extends LitElement implements Layer {
         const owner = this.game.owner(tile);
 
         if (owner && owner.isPlayer()) {
-            this.player = owner;
-            (this.player as PlayerView).profile().then(p => {
+            this.player = owner as PlayerView;
+            this.player.profile().then(p => {
                 this.playerProfile = p;
             });
             this.setVisible(true);
@@ -135,14 +135,14 @@ export class PlayerInfoOverlay extends LitElement implements Layer {
         this.requestUpdate();
     }
 
-    private myPlayer(): Player | null {
+    private myPlayer(): PlayerView | null {
         if (!this.game) {
             return null;
         }
         return this.game.playerByClientID(this.clientID);
     }
 
-    private renderPlayerInfo(player: Player) {
+    private renderPlayerInfo(player: PlayerView) {
         const myPlayer = this.myPlayer();
         const isAlly = myPlayer?.isAlliedWith(player)
         let relationHtml = null;
@@ -181,7 +181,7 @@ export class PlayerInfoOverlay extends LitElement implements Layer {
         `;
     }
 
-    private renderUnitInfo(unit: Unit) {
+    private renderUnitInfo(unit: UnitView) {
         const isAlly = (unit.owner() == this.myPlayer() || this.myPlayer()?.isAlliedWith(unit.owner())) ?? false;
         return html`
             <div class="info-content">
diff --git a/src/client/graphics/layers/StructureLayer.ts b/src/client/graphics/layers/StructureLayer.ts
index e836d1f61..181dbc458 100644
--- a/src/client/graphics/layers/StructureLayer.ts
+++ b/src/client/graphics/layers/StructureLayer.ts
@@ -7,7 +7,7 @@ import anchorIcon from '../../../../resources/images/AnchorIcon.png';
 import missileSiloIcon from '../../../../resources/images/MissileSiloUnit.png';
 import shieldIcon from '../../../../resources/images/ShieldIcon.png';
 import cityIcon from '../../../../resources/images/CityIcon.png';
-import { GameView } from "../../../core/GameView";
+import { GameView, UnitView } from "../../../core/GameView";
 import { Cell, GameUpdateType, Unit, UnitType } from "../../../core/game/Game";
 import { euclDistFN } from "../../../core/game/GameMap";
 
@@ -109,7 +109,7 @@ export class StructureLayer implements Layer {
         return unitType in this.unitConfigs;
     }
 
-    private handleUnitRendering(unit: Unit) {
+    private handleUnitRendering(unit: UnitView) {
         const unitType = unit.type();
         if (!this.isUnitTypeSupported(unitType)) return;
 
@@ -157,7 +157,7 @@ export class StructureLayer implements Layer {
         startY: number,
         width: number,
         height: number,
-        unit: Unit
+        unit: UnitView
     ) {
         for (let y = 0; y < height; y++) {
             for (let x = 0; x < width; x++) {
diff --git a/src/client/graphics/layers/UnitLayer.ts b/src/client/graphics/layers/UnitLayer.ts
index ac4285f23..e142658fc 100644
--- a/src/client/graphics/layers/UnitLayer.ts
+++ b/src/client/graphics/layers/UnitLayer.ts
@@ -5,7 +5,7 @@ import { Layer } from "./Layer";
 import { EventBus } from "../../../core/EventBus";
 import { AlternateViewEvent } from "../../InputHandler";
 import { ClientID } from "../../../core/Schemas";
-import { GameView } from "../../../core/GameView";
+import { GameView, PlayerView, UnitView } from "../../../core/GameView";
 import { euclDistFN, manhattanDistFN, TileRef } from "../../../core/game/GameMap";
 
 enum Relationship {
@@ -18,15 +18,15 @@ export class UnitLayer implements Layer {
     private canvas: HTMLCanvasElement;
     private context: CanvasRenderingContext2D;
 
-    private boatToTrail = new Map<Unit, Set<TileRef>>();
+    private boatToTrail = new Map<UnitView, Set<TileRef>>();
 
     private theme: Theme = null;
 
     private alternateView = false;
 
-    private myPlayer: Player | null = null;
+    private myPlayer: PlayerView | null = null;
 
-    private oldShellTile = new Map<Unit, TileRef>();
+    private oldShellTile = new Map<UnitView, TileRef>();
 
     constructor(private game: GameView, private eventBus: EventBus, private clientID: ClientID) {
         this.theme = game.config().theme();
@@ -77,7 +77,7 @@ export class UnitLayer implements Layer {
         }
     }
 
-    private relationship(unit: Unit): Relationship {
+    private relationship(unit: UnitView): Relationship {
         if (this.myPlayer == null) {
             return Relationship.Enemy;
         }
@@ -90,7 +90,7 @@ export class UnitLayer implements Layer {
         return Relationship.Enemy;
     }
 
-    onUnitEvent(unit: Unit) {
+    onUnitEvent(unit: UnitView) {
         switch (unit.type()) {
             case UnitType.TransportShip:
                 this.handleBoatEvent(unit);
@@ -114,7 +114,7 @@ export class UnitLayer implements Layer {
         }
     }
 
-    private handleDestroyerEvent(unit: Unit) {
+    private handleDestroyerEvent(unit: UnitView) {
         const rel = this.relationship(unit);
 
         // Clear previous area
@@ -149,7 +149,7 @@ export class UnitLayer implements Layer {
         }
     }
 
-    private handleBattleshipEvent(unit: Unit) {
+    private handleBattleshipEvent(unit: UnitView) {
         const rel = this.relationship(unit);
 
         // Clear previous area
@@ -195,7 +195,7 @@ export class UnitLayer implements Layer {
         }
     }
 
-    private handleShellEvent(unit: Unit) {
+    private handleShellEvent(unit: UnitView) {
         const rel = this.relationship(unit);
 
         // Clear current and previous positions
@@ -227,7 +227,7 @@ export class UnitLayer implements Layer {
         );
     }
 
-    private handleNuke(unit: Unit) {
+    private handleNuke(unit: UnitView) {
         const rel = this.relationship(unit);
 
         // Clear previous area
@@ -249,7 +249,7 @@ export class UnitLayer implements Layer {
         }
     }
 
-    private handleTradeShipEvent(unit: Unit) {
+    private handleTradeShipEvent(unit: UnitView) {
         const rel = this.relationship(unit);
 
         // Clear previous area
@@ -282,7 +282,7 @@ export class UnitLayer implements Layer {
         }
     }
 
-    private handleBoatEvent(unit: Unit) {
+    private handleBoatEvent(unit: UnitView) {
         const rel = this.relationship(unit);
 
         if (!this.boatToTrail.has(unit)) {
diff --git a/src/client/graphics/layers/radial/BuildMenu.ts b/src/client/graphics/layers/radial/BuildMenu.ts
index b2c3ddac7..e13571ad6 100644
--- a/src/client/graphics/layers/radial/BuildMenu.ts
+++ b/src/client/graphics/layers/radial/BuildMenu.ts
@@ -38,7 +38,7 @@ const buildTable: BuildItemDisplay[][] = [
 export class BuildMenu extends LitElement {
     public game: GameView;
     public eventBus: EventBus;
-    private myPlayer: Player;
+    private myPlayer: PlayerView;
     private clickedCell: Cell;
     private playerActions: PlayerActions | null
 
diff --git a/src/client/graphics/layers/radial/RadialMenu.ts b/src/client/graphics/layers/radial/RadialMenu.ts
index cfe05ab05..0d3f24bdb 100644
--- a/src/client/graphics/layers/radial/RadialMenu.ts
+++ b/src/client/graphics/layers/radial/RadialMenu.ts
@@ -263,7 +263,7 @@ export class RadialMenu implements Layer {
         const canSendEmojiToAllPlayers = this.g.ownerID(tile) == myPlayer.smallID() && actions.canSendEmojiAllPlayers
         if (canSendEmojiToPlayer || canSendEmojiToAllPlayers) {
             this.activateMenuElement(Slot.Emoji, "#00a6a4", emojiIcon, () => {
-                const target = this.g.owner(tile) == myPlayer ? AllPlayers : (this.g.owner(tile) as Player)
+                const target = this.g.owner(tile) == myPlayer ? AllPlayers : (this.g.owner(tile) as PlayerView)
                 this.emojiTable.onEmojiClicked = (emoji: string) => {
                     this.emojiTable.hideTable()
                     this.eventBus.emit(new SendEmojiIntentEvent(target, emoji))
@@ -290,7 +290,7 @@ export class RadialMenu implements Layer {
         if (!this.g.hasOwner(tile)) {
             return
         }
-        const other = this.g.owner(tile) as Player
+        const other = this.g.owner(tile) as PlayerView
 
 
         if (actions?.interaction.canDonate) {
diff --git a/src/core/GameView.ts b/src/core/GameView.ts
index 1e1d90bba..0943582a0 100644
--- a/src/core/GameView.ts
+++ b/src/core/GameView.ts
@@ -6,7 +6,7 @@ import { TerraNulliusImpl } from './game/TerraNulliusImpl';
 import { WorkerClient } from './worker/WorkerClient';
 import { GameMap, GameMapImpl, TileRef, TileUpdate } from './game/GameMap';
 
-export class UnitView implements Unit {
+export class UnitView {
     public _wasUpdated = true
     public lastPos: MapPos[] = []
 
@@ -62,12 +62,9 @@ export class UnitView implements Unit {
     }
 }
 
-export class PlayerView implements Player {
+export class PlayerView {
 
     constructor(private game: GameView, public data: PlayerUpdate, public nameData: NameViewData) { }
-    borderTiles(): ReadonlySet<TileRef> {
-        throw new Error('Method not implemented.');
-    }
 
     async actions(tile: TileRef): Promise<PlayerActions> {
         return this.game.worker.playerInteraction(this.id(), this.game.x(tile), this.game.y(tile))
@@ -80,9 +77,6 @@ export class PlayerView implements Player {
     smallID(): number {
         return this.data.smallID
     }
-    lastTileChange(): Tick {
-        return 0
-    }
     name(): string {
         return this.data.name
     }
@@ -129,67 +123,24 @@ export class PlayerView implements Player {
         return this.data.troops
     }
 
-    isAlliedWith(other: Player): boolean {
+    isAlliedWith(other: PlayerView): boolean {
         return this.data.allies.some(n => other.smallID() == n)
     }
-    allianceWith(other: Player): Alliance | null {
-        return null
-    }
-    units(...types: UnitType[]): Unit[] {
-        return []
-    }
-    sharesBorderWith(other: Player | TerraNullius): boolean {
-        return false
-    }
-
-    incomingAllianceRequests(): AllianceRequest[] {
-        return []
-    }
-    outgoingAllianceRequests(): AllianceRequest[] {
-        return []
-    }
-    alliances(): Alliance[] {
-        return []
-    }
-    recentOrPendingAllianceRequestWith(other: Player): boolean {
-        return false
-    }
-    relation(other: Player): Relation {
-        return Relation.Neutral
-    }
 
     profile(): Promise<PlayerProfile> {
         return this.game.worker.playerProfile(this.smallID())
     }
 
-    allRelationsSorted(): { player: Player; relation: Relation; }[] {
-        return []
-    }
-    transitiveTargets(): Player[] {
+    transitiveTargets(): PlayerView[] {
         return [...this.targets(), ...this.allies().flatMap(p => p.targets())]
     }
 
     isTraitor(): boolean {
         return this.data.isTraitor
     }
-    canTarget(other: Player): boolean {
-        return false
-    }
-    toString(): string {
-        return ''
-    }
-    canSendEmoji(recipient: Player | typeof AllPlayers): boolean {
-        return false
-    }
     outgoingEmojis(): EmojiMessage[] {
         return this.data.outgoingEmojis
     }
-    canDonate(recipient: Player): boolean {
-        return false
-    }
-    canBuild(type: UnitType, targetTile: TileRef): TileRef | false {
-        return false
-    }
     info(): PlayerInfo {
         return new PlayerInfo(this.name(), this.type(), this.clientID(), this.id())
     }
diff --git a/src/core/configuration/Config.ts b/src/core/configuration/Config.ts
index ac9ce08d4..b02628461 100644
--- a/src/core/configuration/Config.ts
+++ b/src/core/configuration/Config.ts
@@ -7,6 +7,7 @@ import { GameConfig } from "../Schemas";
 import { DefaultConfig } from "./DefaultConfig";
 import { DevConfig, DevServerConfig } from "./DevConfig";
 import { GameMap, TileRef } from "../game/GameMap";
+import { PlayerView } from "../GameView";
 
 export enum GameEnv {
 	Dev,
@@ -58,8 +59,8 @@ export interface Config {
 	numSpawnPhaseTurns(): number
 
 	startManpower(playerInfo: PlayerInfo): number
-	populationIncreaseRate(player: Player): number
-	goldAdditionRate(player: Player): number
+	populationIncreaseRate(player: Player | PlayerView): number
+	goldAdditionRate(player: Player | PlayerView): number
 	troopAdjustmentRate(player: Player): number
 	attackTilesPerTick(attckTroops: number, attacker: Player, defender: Player | TerraNullius, numAdjacentTilesWithEnemy: number): number
 	attackLogic(gm: GameMap, attackTroops: number, attacker: Player, defender: Player | TerraNullius, tileToConquer: TileRef): {
@@ -68,7 +69,7 @@ export interface Config {
 		tilesPerTickUsed: number
 	}
 	attackAmount(attacker: Player, defender: Player | TerraNullius): number
-	maxPopulation(player: Player): number
+	maxPopulation(player: Player | PlayerView): number
 	cityPopulationIncrease(): number
 	boatAttackAmount(attacker: Player, defender: Player | TerraNullius): number
 	boatMaxDistance(): number
diff --git a/src/core/game/Game.ts b/src/core/game/Game.ts
index 52cab714c..8a36e0035 100644
--- a/src/core/game/Game.ts
+++ b/src/core/game/Game.ts
@@ -1,5 +1,6 @@
 import { Config } from "../configuration/Config"
 import { GameEvent } from "../EventBus"
+import { PlayerView } from "../GameView"
 import { ClientID, GameConfig, GameID } from "../Schemas"
 import { GameMap, GameMapImpl, TileRef, TileUpdate } from "./GameMap"
 
@@ -46,7 +47,7 @@ export enum GameType {
 }
 
 export interface UnitInfo {
-    cost: (player: Player) => Gold
+    cost: (player: Player | PlayerView) => Gold
     // Determines if its owner changes when its tile is conquered.
     territoryBound: boolean
     maxHealth?: number,