diff --git a/assets/images/civilization/civilization-cities-cyberpunk.png b/assets/images/civilization/civilization-cities-cyberpunk.png
new file mode 100644
index 0000000..e230cee
Binary files /dev/null and b/assets/images/civilization/civilization-cities-cyberpunk.png differ
diff --git a/assets/images/civilization/civilization-cities-cyberpunk.psd b/assets/images/civilization/civilization-cities-cyberpunk.psd
new file mode 100644
index 0000000..585b62f
Binary files /dev/null and b/assets/images/civilization/civilization-cities-cyberpunk.psd differ
diff --git a/data/civilization-artwork.json b/data/civilization-artwork.json
index 9bdf4fc..66ba714 100644
--- a/data/civilization-artwork.json
+++ b/data/civilization-artwork.json
@@ -14,6 +14,7 @@
   "unitSheet": { "key": "civilization-units", "path": "assets/images/civilization/civilization-units.png", "frameWidth": 64, "frameHeight": 96 },
   "iconSheet": { "key": "civilization-icons", "path": null, "frameWidth": 48, "frameHeight": 48 },
   "citySheets": {
-    "classic": { "key": "civilization-cities-classic", "path": "assets/images/civilization/civilization-cities-classic.png", "frameWidth": 128, "frameHeight": 96 }
+    "classic": { "key": "civilization-cities-classic", "path": "assets/images/civilization/civilization-cities-classic.png", "frameWidth": 128, "frameHeight": 96 },
+    "cyberpunk": { "key": "civilization-cities-cyberpunk", "path": "assets/images/civilization/civilization-cities-cyberpunk.png", "frameWidth": 128, "frameHeight": 96 }
   }
 }
diff --git a/data/opponents.json b/data/opponents.json
index 8762e0a..18a7f9f 100644
--- a/data/opponents.json
+++ b/data/opponents.json
@@ -9,6 +9,7 @@
         "alphabet",
         "pottery"
       ],
+      "citySheet": "classic",
       "bio": "AI Bro sent from the future to show the superiority of the future.",
       "voice": "Legion",
       "convo": [
@@ -50,6 +51,7 @@
         "bronzeworking",
         "thewheel"
       ],
+      "citySheet": "classic",
       "bio": "Came for the honey, stayed for the salmon!",
       "voice": "Jewel Weaver - Bear",
       "convo": [
@@ -87,6 +89,7 @@
       "name": "Victor",
       "trait": "pioneering",
       "startingTechs": [],
+      "citySheet": "cyberpunk",
       "bio": "Patient and calculating. Moves are made using ancient technology.",
       "voice": "Starfield - Vasco",
       "convo": [
@@ -127,6 +130,7 @@
         "bronzeworking",
         "masonry"
       ],
+      "citySheet": "classic",
       "bio": "Wassssuppp everybody! I'm here for the party!!",
       "voice": "Batman - Killer Croc",
       "convo": [
@@ -168,6 +172,7 @@
         "warriorcode",
         "thewheel"
       ],
+      "citySheet": "classic",
       "bio": "Can you find your way out of my maze of puzzles, games and fun!",
       "speech": {
         "intro": [
@@ -195,6 +200,7 @@
         "horsebackriding",
         "masonry"
       ],
+      "citySheet": "classic",
       "bio": "Thank you for visiting with me.",
       "voice": "Betty White",
       "convo": [
@@ -235,6 +241,7 @@
         "horsebackriding",
         "pottery"
       ],
+      "citySheet": "classic",
       "bio": "I play slow, I win fast!",
       "voice": "SlowAltered",
       "convo": [
@@ -276,6 +283,7 @@
         "warriorcode",
         "masonry"
       ],
+      "citySheet": "classic",
       "bio": "I'm here for the thrill of extreme victory!",
       "voice": "Mass Effect - Commander Shepard",
       "convo": [
@@ -317,6 +325,7 @@
         "thewheel",
         "bronzeworking"
       ],
+      "citySheet": "classic",
       "bio": "Come on let's play! I promise not to use my x-ray eyes.",
       "voice": "Zero - Borderlands 3",
       "convo": [
@@ -358,6 +367,7 @@
         "ceremonialburial",
         "bronzeworking"
       ],
+      "citySheet": "classic",
       "bio": "Having fun and playing is the name of the game for me!",
       "speech": {
         "intro": [
@@ -385,6 +395,7 @@
         "pottery",
         "alphabet"
       ],
+      "citySheet": "classic",
       "bio": "Well now yall know I want to play some them games!",
       "voice": "Life is Strange - Jed Lucan",
       "convo": [
@@ -422,6 +433,7 @@
       "name": "Natasha",
       "trait": "pioneering",
       "startingTechs": [],
+      "citySheet": "classic",
       "bio": "Perhaps if I win, you will spill the secrets you've been keeping!",
       "voice": "Street Fighter 6 - Marisa",
       "convo": [
@@ -462,6 +474,7 @@
         "thewheel",
         "alphabet"
       ],
+      "citySheet": "classic",
       "bio": "Hocus Pocus Alacazam!!!!",
       "convo": [
         "terry",
@@ -502,6 +515,7 @@
         "masonry",
         "ceremonialburial"
       ],
+      "citySheet": "classic",
       "bio": "Woof! Woof!",
       "speech": {
         "intro": [
@@ -529,6 +543,7 @@
         "warriorcode",
         "masonry"
       ],
+      "citySheet": "classic",
       "bio": "Hey mon! Yous be knowin' I been wantin' ta play on da Fertig Games for a while now mon!",
       "voice": "Djed Spence",
       "convo": [
@@ -568,6 +583,7 @@
         "thewheel",
         "alphabet"
       ],
+      "citySheet": "classic",
       "bio": "Let's take a break on a warm summer day to spend time playing games!",
       "voice": "Street Fighter 6 - Crimson Viper",
       "speech": {
@@ -600,6 +616,7 @@
       "name": "Balam",
       "trait": "pioneering",
       "startingTechs": [],
+      "citySheet": "classic",
       "bio": "Mystical Powers and a knack for games.",
       "speech": {
         "intro": [
@@ -635,6 +652,7 @@
         "masonry",
         "bronzeworking"
       ],
+      "citySheet": "classic",
       "bio": "I traveled WAY to far for this stupid Earth Internet.",
       "speech": {
         "intro": [
@@ -669,6 +687,7 @@
         "alphabet",
         "pottery"
       ],
+      "citySheet": "classic",
       "bio": "I ain't seen you 'round these parts before.",
       "speech": {
         "intro": [
@@ -703,6 +722,7 @@
         "masonry",
         "alphabet"
       ],
+      "citySheet": "classic",
       "bio": "Aaaaaaargh! Me be playin' these games matey!",
       "voice": "pirate",
       "speech": {
@@ -738,6 +758,7 @@
         "bronzeworking",
         "horsebackriding"
       ],
+      "citySheet": "cyberpunk",
       "bio": "She's here from the future to learn our games and study our culture.",
       "voice": "Invincible VS - Atom Eve",
       "speech": {
@@ -774,6 +795,7 @@
         "pottery",
         "ceremonialburial"
       ],
+      "citySheet": "classic",
       "bio": "Oooooooh yeah brother!!! You wanna play with The Smasher?!",
       "speech": {
         "intro": [
@@ -805,6 +827,7 @@
       "name": "DV-8-2303",
       "trait": "pioneering",
       "startingTechs": [],
+      "citySheet": "cyberpunk",
       "bio": "Cybernetic Systems online. Activate human defeat protocol... EOF",
       "speech": {
         "intro": [
@@ -839,6 +862,7 @@
         "pottery",
         "ceremonialburial"
       ],
+      "citySheet": "classic",
       "bio": "I've disabled the firewall protections on this website. Now to hack the core!",
       "voice": "Life is Strange - Rachael Amber",
       "speech": {
@@ -874,6 +898,7 @@
         "masonry",
         "pottery"
       ],
+      "citySheet": "classic",
       "bio": "I have traveled far to play these games. Honor me and let us play!",
       "speech": {
         "intro": [
@@ -908,6 +933,7 @@
         "ceremonialburial",
         "masonry"
       ],
+      "citySheet": "classic",
       "bio": "I haven't had this much fun since the Mezasoic era!",
       "speech": {
         "intro": [
@@ -942,6 +968,7 @@
         "ceremonialburial",
         "horsebackriding"
       ],
+      "citySheet": "classic",
       "bio": "Ahoy you land lovers!",
       "voice": "Defiant Calder",
       "convo": [
@@ -983,6 +1010,7 @@
         "pottery",
         "thewheel"
       ],
+      "citySheet": "classic",
       "bio": "Bucky Beaver and I are there to TRAP all the fun and games!",
       "speech": {
         "intro": [
@@ -1017,6 +1045,7 @@
         "pottery",
         "thewheel"
       ],
+      "citySheet": "classic",
       "bio": "From a different galaxy, but has the same great Earth based lifeforms taste for games!",
       "speech": {
         "intro": [
@@ -1051,6 +1080,7 @@
         "horsebackriding",
         "thewheel"
       ],
+      "citySheet": "cyberpunk",
       "bio": "MISSION OBJECTIVE: Victory.... all other priorities recinded.",
       "speech": {
         "intro": [
diff --git a/src/games/civilization/CivilizationGame.js b/src/games/civilization/CivilizationGame.js
index d2bd094..8fe6740 100644
--- a/src/games/civilization/CivilizationGame.js
+++ b/src/games/civilization/CivilizationGame.js
@@ -67,6 +67,7 @@ export default class CivilizationGame extends Phaser.Scene {
     this.logEntries = [];
     this.logScrollY = 0;
     this.statusQueue = [];
+    this.pendingCityAttacks = [];
   }
 
   create() {
@@ -292,7 +293,9 @@ export default class CivilizationGame extends Phaser.Scene {
       [rivals[i], rivals[j]] = [rivals[j], rivals[i]];
     }
     const leaders = [me, ...rivals.slice(0, opponents)]
-      .map((op) => ({ id: op.id, name: op.name, trait: op.trait, startingTechs: op.startingTechs }));
+      .map((op) => ({
+        id: op.id, name: op.name, trait: op.trait, startingTechs: op.startingTechs, citySheet: op.citySheet,
+      }));
     const seed = (Date.now() % 1000000) + 1;
     try {
       this.state = Logic.createGame(this.rules, {
@@ -457,16 +460,30 @@ export default class CivilizationGame extends Phaser.Scene {
   // popup once this one is dismissed (e.g. first-contact opens the diplomacy
   // screen next) — that callback is then responsible for resuming the queue
   // itself once IT closes (see openDiplomacy()'s onClose).
-  announceStatus(msg, onDismiss) {
-    this.statusQueue.push({ msg, onDismiss });
+  //
+  // `pre`, if given, is a cinematic step (e.g. pan the camera + replay a
+  // combat) that runs BEFORE the text popup appears — it receives a
+  // `proceed` callback to call once it's done. Used for city-attack/capture
+  // announcements, which should show the attack playing out before the
+  // outcome text, rather than the text popping up first.
+  announceStatus(msg, onDismiss, pre) {
+    this.statusQueue.push({ msg, onDismiss, pre });
     if (!this.modalOpen) this.showNextStatus();
   }
 
   showNextStatus() {
     const item = this.statusQueue.shift();
     if (!item) return;
-    const { msg, onDismiss } = item;
+    // Set modalOpen up front, even though the popup itself isn't built until
+    // `proceed()` runs — a `pre` cinematic (camera pan + combat replay)
+    // should block input exactly like the popup that follows it does.
     this.modalOpen = true;
+    const { msg, onDismiss, pre } = item;
+    const proceed = () => this.showStatusPopup(msg, onDismiss);
+    if (pre) pre(proceed); else proceed();
+  }
+
+  showStatusPopup(msg, onDismiss) {
     const cx = GAME_WIDTH / 2;
     const cy = GAME_HEIGHT / 2;
     const root = this.add.container(0, 0).setDepth(D.modal);
@@ -613,10 +630,22 @@ export default class CivilizationGame extends Phaser.Scene {
     }
 
     if (myUnits.length && (!sel || sel.x !== c || sel.y !== r)) {
+      // A unit is already active and the player clicked a DIFFERENT tile
+      // with one of their own units on it — ambiguous whether they meant to
+      // send the active unit there (joining that tile's stack) or take
+      // control of the unit they clicked, so ask instead of guessing.
+      if (sel && state.current === human) {
+        this.openUnitInteractionMenu(sel, myUnits, c, r);
+        return;
+      }
       this.selectUnit(myUnits[0]);
       return;
     }
     if (myUnits.length && sel && sel.x === c && sel.y === r) {
+      if (myUnits.length > 1 && state.current === human) {
+        this.openStackSwitchMenu(sel, myUnits);
+        return;
+      }
       // Cycle the stack.
       const i = myUnits.indexOf(sel);
       this.selectUnit(myUnits[(i + 1) % myUnits.length]);
@@ -981,10 +1010,40 @@ export default class CivilizationGame extends Phaser.Scene {
   }
 
   openUnitActionMenu(unit) {
-    this.modalOpen = true;
     const def = this.rules.units[unit.type];
-    const actions = this.getUnitActions(unit);
+    this.openActionListMenu(def.name, this.getUnitActions(unit));
+  }
 
+  // Clicked a DIFFERENT tile that has one or more of the player's own units
+  // while a unit is already selected — offer to move the selected unit there
+  // (joining whatever's on that tile) or to switch active control to one of
+  // the units already there.
+  openUnitInteractionMenu(sel, targetUnits, c, r) {
+    const actions = [
+      { label: 'Move', onSelect: () => this.moveTo(sel, c, r) },
+      ...targetUnits.map((u) => ({
+        label: `Switch to ${this.rules.units[u.type].name}`,
+        onSelect: () => this.selectUnit(u),
+      })),
+    ];
+    this.openActionListMenu(this.rules.units[targetUnits[0].type].name, actions);
+  }
+
+  // Clicked the SAME tile the selected unit is already stacked on — offer to
+  // switch active control to one of the other units there, or "Join" to
+  // leave the current selection as-is (they're already stacked together).
+  openStackSwitchMenu(sel, stackUnits) {
+    const actions = stackUnits.filter((u) => u.id !== sel.id).map((u) => ({
+      label: `Switch to ${this.rules.units[u.type].name}`,
+      onSelect: () => this.selectUnit(u),
+    }));
+    this.openActionListMenu('Unit Stack', actions, 'JOIN');
+  }
+
+  // Shared list-of-buttons modal used by openUnitActionMenu (clicking your
+  // own selected unit) and openUnitInteractionMenu (clicking another unit).
+  openActionListMenu(title, actions, cancelLabel = 'CANCEL') {
+    this.modalOpen = true;
     const cx = GAME_WIDTH / 2;
     const cy = GAME_HEIGHT / 2;
     const itemH = 52;
@@ -997,16 +1056,16 @@ export default class CivilizationGame extends Phaser.Scene {
     const root = this.add.container(0, 0).setDepth(D.modal);
     const dim = this.add.rectangle(cx, cy, GAME_WIDTH, GAME_HEIGHT, 0x000000, 0.55).setInteractive();
     const panel = this.add.rectangle(cx, py + ph / 2, pw, ph, COLORS.panel).setStrokeStyle(2, COLORS.accent);
-    const title = this.add.text(cx, py + 34, def.name, {
+    const titleText = this.add.text(cx, py + 34, title, {
       fontFamily: 'Righteous', fontSize: '24px', color: COLORS.accentHex,
     }).setOrigin(0.5);
-    root.add([dim, panel, title]);
+    root.add([dim, panel, titleText]);
 
-    // This menu opens from a pointerdown on the unit's sprite, so the mouse
-    // button is typically still held when these buttons appear. Selected
-    // units are frequently screen-centered (selectNextUnit centers the view
-    // on them), same as this menu, so the imminent mouse-up can land right
-    // on a button and fire it before the player ever sees the menu. Ignore
+    // Callers open this from a pointerdown/click, so the mouse button is
+    // often still held when these buttons appear (e.g. selected units are
+    // frequently screen-centered — selectNextUnit centers the view on them —
+    // same as this menu, so the imminent mouse-up can land right on a
+    // button and fire it before the player ever sees the menu). Ignore
     // clicks until that one release has passed.
     let armed = !this.input.activePointer.isDown;
     const arm = () => { armed = true; };
@@ -1029,7 +1088,7 @@ export default class CivilizationGame extends Phaser.Scene {
     });
 
     const cancelY = py + 76 + actions.length * (itemH + gap) + 8;
-    const cancel = new Button(this, cx, cancelY + 20, 'CANCEL', () => {
+    const cancel = new Button(this, cx, cancelY + 20, cancelLabel, () => {
       if (!armed) return;
       close();
     }, { width: pw - 48, height: 44, fontSize: 16, variant: 'ghost' });
@@ -1063,6 +1122,7 @@ export default class CivilizationGame extends Phaser.Scene {
       this.openTech();
     }
     this.presentAIProposals();
+    this.announceCityAttacks();
     this.announceEvents();
     this.view.refresh();
     this.refreshHud();
@@ -1103,7 +1163,21 @@ export default class CivilizationGame extends Phaser.Scene {
       // "resolve now, animate after" trick as the player's own moves, just
       // via a before/after snapshot instead of a waypoint path.
       const combatEvents = this.collectNewCombatEvents();
-      const visibleCombat = combatEvents.filter((e) => this.view.isTileVisible(e.ax, e.ay)
+      // Combats against one of the human's own cities are always deferred to
+      // a dedicated cinematic (camera pan + replay + outcome popup) played
+      // at the start of the human's next turn, rather than silently replayed
+      // here (possibly off-screen) like every other AI-vs-AI combat.
+      const human = this.state.humanIndex;
+      const elsewhere = [];
+      for (const e of combatEvents) {
+        const city = Logic.cityAt(this.state, e.x, e.y);
+        if (city && city.civ === human) {
+          this.pendingCityAttacks.push({ e, cityId: city.id, cityName: city.name, x: city.x, y: city.y });
+        } else {
+          elsewhere.push(e);
+        }
+      }
+      const visibleCombat = elsewhere.filter((e) => this.view.isTileVisible(e.ax, e.ay)
         || this.view.isTileVisible(e.x, e.y));
       const combatUnitIds = new Set(combatEvents.flatMap((e) => [e.attackerId, e.defenderId]));
       const moves = [];
@@ -1144,6 +1218,24 @@ export default class CivilizationGame extends Phaser.Scene {
     }
   }
 
+  // Combats against one of the human's own cities, deferred from
+  // runToHumanTurn()'s per-civ stepping (see stepCiv there) so they always
+  // get a camera pan + replay + outcome popup instead of possibly playing
+  // silently off-screen alongside every other AI-vs-AI combat.
+  announceCityAttacks() {
+    const attacks = this.pendingCityAttacks;
+    this.pendingCityAttacks = [];
+    for (const atk of attacks) {
+      const { e, cityName, x, y } = atk;
+      const attackerName = this.state.civs[e.attackerCiv]?.name ?? 'An enemy';
+      const outcome = e.attackerWon ? `${cityName}'s defenders were defeated!` : `${cityName} held its ground!`;
+      this.announceStatus(`${attackerName} attacked ${cityName}! ${outcome}`, undefined, (proceed) => {
+        this.view.panToTile(x, y);
+        this.view.animateCombat([e], proceed);
+      });
+    }
+  }
+
   announceEvents() {
     const human = this.state.humanIndex;
     for (const e of this.state.events) {
@@ -1154,7 +1246,26 @@ export default class CivilizationGame extends Phaser.Scene {
       } else if (e.type === 'techDone' && e.civ === human) {
         this.announceStatus(`Research complete: ${this.rules.techs[e.tech].name}`);
       } else if (e.type === 'cityCaptured' && (e.from === human || e.to === human)) {
-        this.announceStatus(e.to === human ? `You captured ${e.name}!` : `${e.name} has fallen!`);
+        if (e.to === human) {
+          this.announceStatus(`You captured ${e.name}!`);
+        } else {
+          // Losing a city gets the same camera-pan-then-replay treatment as
+          // a defended attack (see announceCityAttacks) — this covers the
+          // undefended-city case, which never generates a 'combat' event at
+          // all (see captureCity in CivilizationLogic.js), so this is the
+          // only place that ever shows anything for it.
+          const conqueror = this.state.civs[e.to]?.name ?? 'the enemy';
+          const cityRef = Logic.cityById(this.state, e.cityId);
+          this.announceStatus(`${e.name} has fallen to ${conqueror}!`, undefined, (proceed) => {
+            if (!cityRef) { proceed(); return; }
+            this.view.panToTile(cityRef.x, cityRef.y);
+            if (e.attackerType) {
+              this.view.animateCityFall(e.attackerCiv, e.attackerType, cityRef.x, cityRef.y, proceed);
+            } else {
+              this.time.delayedCall(500, proceed);
+            }
+          });
+        }
       } else if (e.type === 'civEliminated') {
         this.announceStatus(`${this.state.civs[e.civ].name} has been destroyed`);
       } else if (e.type === 'spaceshipLaunched') {
diff --git a/src/games/civilization/CivilizationLogic.js b/src/games/civilization/CivilizationLogic.js
index 9e994c7..bb297a2 100644
--- a/src/games/civilization/CivilizationLogic.js
+++ b/src/games/civilization/CivilizationLogic.js
@@ -96,6 +96,7 @@ export function createGame(rules, opts) {
       id: i,
       leaderId: leaders[i].id,
       traitId: leaders[i].trait ?? null,
+      citySheet: leaders[i].citySheet ?? 'classic',
       name: leaders[i].name,
       color: rules.playerColors[i % rules.playerColors.length],
       human: i === humanIndex,
@@ -1033,7 +1034,10 @@ export function captureCity(rules, state, unit, city) {
   const remaining = civCities(state, oldCiv.id);
   if (wasCapital && remaining.length) remaining[0].buildings.palace = true;
 
-  state.events.push({ type: 'cityCaptured', cityId: city.id, name: city.name, from: oldCiv.id, to: newCivIdx });
+  state.events.push({
+    type: 'cityCaptured', cityId: city.id, name: city.name, from: oldCiv.id, to: newCivIdx,
+    attackerCiv: unit.civ, attackerType: unit.type,
+  });
   if (!remaining.length) eliminateCiv(rules, state, oldCiv.id);
   checkVictory(rules, state);
   return { result: 'captured', cityId: city.id };
diff --git a/src/games/civilization/CivilizationMapView.js b/src/games/civilization/CivilizationMapView.js
index cbcf52c..f972211 100644
--- a/src/games/civilization/CivilizationMapView.js
+++ b/src/games/civilization/CivilizationMapView.js
@@ -549,7 +549,7 @@ export class CivilizationMapView {
     const container = scene.add.container(x, y).setDepth(depthY);
     const walled = !!city.buildings.citywalls;
 
-    const themeKey = 'civilization-cities-classic';
+    const themeKey = `civilization-cities-${civ.citySheet ?? 'classic'}`;
     if (scene.textures.exists(themeKey)) {
       const tier = city.size >= 13 ? 3 : city.size >= 8 ? 2 : city.size >= 4 ? 1 : 0;
       const img = scene.add.image(0, TILE_H - FRAME_H + 48, themeKey, walled ? 4 + tier : tier);
@@ -786,6 +786,33 @@ export class CivilizationMapView {
     return { container, img, roundel, color };
   }
 
+  // Undefended-city capture has no duel to replay (captureCity in
+  // CivilizationLogic.js never pushes a combat event) — just the attacker's
+  // ghost popping into the city, holding a moment, then fading, to at least
+  // show who took it before the outcome popup appears.
+  animateCityFall(civIdx, unitType, c, r, onDone) {
+    const ghost = this.buildCombatGhost(civIdx, unitType, c, r);
+    ghost.container.setScale(0.4);
+    ghost.container.setAlpha(0);
+    this.scene.tweens.add({
+      targets: ghost.container,
+      scale: 1,
+      alpha: 1,
+      duration: 300,
+      ease: 'Back.easeOut',
+      onComplete: () => {
+        this.scene.time.delayedCall(500, () => {
+          this.scene.tweens.add({
+            targets: ghost.container,
+            alpha: 0,
+            duration: 300,
+            onComplete: () => { ghost.container.destroy(); onDone?.(); },
+          });
+        });
+      },
+    });
+  }
+
   // Tints the loser bright red (setTint on sprite art; a manual red redraw
   // for the procedural-roundel fallback, which has no Tint component),
   // flashes it a few times, then shrinks it away and destroys it.
diff --git a/tools/verifyCivilization.js b/tools/verifyCivilization.js
index f877c1e..37b6c77 100644
--- a/tools/verifyCivilization.js
+++ b/tools/verifyCivilization.js
@@ -193,6 +193,10 @@ section('1b. opponents data');
 
 const opponentsJson = JSON.parse(readFileSync(join(root, 'data/opponents.json'), 'utf8'));
 check('opponents present', Array.isArray(opponentsJson.opponents) && opponentsJson.opponents.length > 0);
+let cityThemes = null;
+try {
+  cityThemes = JSON.parse(readFileSync(join(root, 'data/civilization-artwork.json'), 'utf8')).citySheets;
+} catch { /* checked separately in section 1; opponents citySheet check just skips below */ }
 if (RULES) {
   for (const op of opponentsJson.opponents ?? []) {
     check(`opponent ${op.id} has trait`, typeof op.trait === 'string' && op.trait.length > 0);
@@ -201,6 +205,10 @@ if (RULES) {
     for (const techId of op.startingTechs ?? []) {
       check(`opponent ${op.id} startingTechs ${techId} known tech`, !!RULES.techs[techId]);
     }
+    if (cityThemes) {
+      check(`opponent ${op.id} has citySheet`, typeof op.citySheet === 'string' && op.citySheet.length > 0);
+      check(`opponent ${op.id} citySheet resolves`, !!cityThemes[op.citySheet], op.citySheet);
+    }
     const traitTechs = RULES.civTraits[op.trait]?.startingTechs ?? [];
     const total = new Set([...traitTechs, ...(op.startingTechs ?? [])]).size;
     check(`opponent ${op.id} has 2-3 total starting techs`, total === 2 || total === 3, `${total}`);