🖥️ PC2008TreyarchHARD

Call of Duty Zombies rebuild deck

HARD

You will get the loop working. Then the real work starts.

This is the outlier in the category and it gets its own verdict rather than the franchise's. Strip the branding off and Zombies is a hold-out map, a points economy and a difficulty curve, none of which need a server, an anti-cheat team, or a hundred players — solo or two on a couch sidesteps the entire problem that makes everything else here a NO. It shipped in November 2008 as a bonus mode a handful of Treyarch people built alongside a much bigger game, which is roughly the scale you are working at. The one place an agent will fail you is the spawn director: left alone it will spawn enemies around the player, which deletes the barricade design in a single line, so insist on fixed entry points and a concurrency cap before anything else.

Difficulty: HARD · 3 of 5
First playable: A weekend
The original: 3 team-years
Released: 2008 · PC
Genre: Round-Based Survival

The one-shot build prompt

Build a round-based survival shooter for one player, or two on a shared keyboard. three.js, one small enclosed map, no networking of any kind — that omission is the reason this is achievable.

Requirements:
- A round is a spawn budget, not a timer. Each round has a fixed pool of enemies to release, a hard cap on how many may be alive simultaneously, and a spawn interval; the round ends when the pool empties and the last one dies, followed by a short breather. Scale pool size, health and move speed from a single curve you can tune in one place. Get this wrong and you get either a stampede or a frame-rate problem, and the escalation stops being readable.
- Enemies enter only through fixed boarded windows, never near the player. They must tear planks off a barricade before climbing in, each plank taking time.
- One currency, earned for damage and more for kills, with three sinks: weapons and ammunition bought off marked wall panels, locked doors that permanently open new areas, and repairing barricades between waves. Repairing pays, so the lull has a job.
- Start in one small room with a pistol. The map is traversable only by spending, so opening it up is a deliberate trade against being armed.
- Down-and-revive with a bleed-out timer rather than instant death for the second player.
- Feel: heavy audio on the plank tear, a round-change sting, a large round counter.

Definition of done: on round nine I am broke, holding two windows I cannot repair fast enough, and the decision to open the next door is hard.

Before you start🧰 The toolkit — models, MCP servers, art and 3D

What you lose

The map secrets, and the wiki-and-Discord archaeology culture that grew up around decoding them
Sound design that makes an empty room on round twelve more frightening than the horde
Perk-a-Colas, wonder weapons and Pack-a-Punch, which arrived across a year of map packs rather than in the first map
Three friends on voice chat, which is how most people played it

What to steal

One currency buys power or space

The same money opens the next door and buys the next gun, so every purchase is an argument with yourself about whether you would rather be stronger or have more room to run. It costs you one integer and produces a better decision than most skill trees.

ScopeA weekend— build just this, not the game

Single self-contained HTML file, Canvas 2D, no build step. Top-down grid map of eight rooms joined by locked doors, one player, and enemy pressure that ramps continuously. There is exactly one currency, earned by killing, with two competing sinks: weapon upgrades bought from panels fixed to specific walls, and doors, each with a printed price, that unlock a room permanently. Put the better panels in the outer rooms, so power sits behind space. Tune the earn rate so the player can never afford both in the same lull. Print every price in the world, on the door or the wall itself, never in a menu: the map has to read as a shopping list. Show the balance large. Definition of done: I stand in a doorway with just enough for either the door or the gun, and I do not know which to buy.

Make it different

Not a clone — Call of Duty Zombies re-themed and cut down to something you can finish. The angle is the important reel: it is what turns a project into a weekend. 24,360 ways to land.

Seasonal Same Sofa

Call of Duty Zombies, but local split-screen instead of online, set in a farmer’s market circuit. Rendered in anime cel-shade.

Themea farmer’s market circuit

Anglelocal split-screen instead of online

Lookanime cel-shade

Build a browser game called "Seasonal Same Sofa".

The pitch in one line: a round-based survival in the spirit of Call of Duty Zombies, but local split-screen instead of online, set in a farmer’s market circuit.

WHAT THIS IS
Take the SHAPE of Call of Duty Zombies — its core loop, and whatever makes that loop good — and rebuild it as your own game in a different world at a smaller scope. Use your own names, art and audio, which you want anyway: a reskin of somebody else's game is less interesting than a new one that works the same way.

THE ANGLE — this is the important constraint, honour it above everything else
Local split-screen instead of online. Two players, one keyboard or two gamepads, one screen. All the multiplayer fun, none of the distributed systems.
This is what makes the project finishable. If a decision would push the scope back towards the original's, take the smaller option every time.

THE THEME
A farmer’s market circuit. Crops, weather and regular customers. The year loops; the skill is learning the seasons.
The theme is not a coat of paint. Let it change what the mechanics mean — a reload, a health pack and a locked door should all be things that make sense in this world and nowhere else.

LOOK
Anime cel-shade. Hard ink outlines, flat colour fills, specular blobs on hair and metal, and camera cuts that feel like episode storyboards.

REQUIREMENTS
- Runs in a browser with no build step. Canvas 2D unless the angle genuinely requires 3D, in which case three.js.
- Fixed-timestep update loop with interpolated rendering, so it behaves the same at 60Hz and 144Hz.
- Every tuning constant in one CONFIG object at the top, exposed as live sliders in a debug panel. You will find the feel by dragging those, not by prompting.
- All content — levels, entities, balance numbers — in JSON or plain data files, never inline in the logic.
- Audio generated with the Web Audio API rather than asset files.
- Respect prefers-reduced-motion: keep the fades, drop the shake and the parallax.

BUILD ORDER
1. The core loop with placeholder rectangles, at the reduced scope the angle demands. No theme, no art, no audio. Make it fun as rectangles first.
2. The angle's consequences. Cutting to bots, or to turn-based, or to one level changes the design rather than just shrinking it — find out how and rewrite step 1.
3. The theme, as content and data.
4. The look, applied last as a rendering layer over a game that already works.

Start by writing a one-page plan: the core loop, what the angle removes and what that frees you to do properly, and what you are deliberately leaving out. Wait for me to approve it before writing code.

Prior art — read before you build

Half the time one of these already does what you wanted, and the other half it saves you a week of solving a problem someone documented in 1997.

Did you build it?

0Share on X

One count per game. No account — it is tied to a salted hash of your IP, which is not stored in a form anyone can reverse. Every build adds 3 team-years to the counter on the homepage.

Then try these

Or roll something nobody has built yet →

Questions

How hard is Call of Duty Zombies to rebuild with an AI agent?

Yes — every game is buildable at some scope. The question is how hard, and Call of Duty Zombies is HARD (3 of 5). You will get the loop working. Then the real work starts. Solo scope keeps the code closed, and then the game turns out to be the door-unlock economy and the round curve, numbers you only find by playing thirty rounds of your own build until the map opens at the rate the horde grows. Reckon on a weekend to something you can actually play — not to something that matches the 3 team-years Treyarch spent.

What makes Call of Duty Zombies hard to rebuild?

Solo scope keeps the code closed, and then the game turns out to be the door-unlock economy and the round curve, numbers you only find by playing thirty rounds of your own build until the map opens at the rate the horde grows. That is why it sits at HARD rather than a tier either side of it. If you want the idea without the project, the transferable part is one currency buys power or space — a weekend of work.

How long does it take to build a Call of Duty Zombies clone?

Wrong question, and it is worth saying why. Nobody rebuilds Call of Duty Zombies — the original took Treyarch on the order of 3 team-years, released in 2008 on PC. What you can do is reach something playable and genuinely yours in about a weekend, and then keep going for as long as it stays interesting. Any figure that claims otherwise is measuring a prototype and calling it a game.

What do I lose by building my own Call of Duty Zombies?

The map secrets, and the wiki-and-Discord archaeology culture that grew up around decoding them. Sound design that makes an empty room on round twelve more frightening than the horde. Perk-a-Colas, wonder weapons and Pack-a-Punch, which arrived across a year of map packs rather than in the first map. Those are the parts a prompt will not hand you.

Which AI coding agent should I use to build it?

Any of Claude Code, Codex or Cursor will handle this prompt. Paste it as your first message, let the agent scaffold the project, then iterate on feel — the second, third and tenth prompts are where a game actually gets good. Work in an empty folder or a fresh git branch so you can throw it away cheaply.

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