Bullet Hell Casino
A game by @goldenmoooooooner on Spawn.
Genre: Shooter, Roguelite, Action
A twin-stick wizard shooter: blast through eight floors of a demon casino, wreck the slots, and gun down the Devil to win your soul back.
Bullet Hell Casino on Spawn now
Reviews: 100% loved it · 4 votes · 4 reviews and replies · 4 likes · 8 plays.
Released 2026-10-19. 10 updates since release, the newest 2026-10-20.
Earlier update: Fair Fights (2026-10-20)
- Bosses and minibosses no longer turn into bullet sponges in New Game+ loops
- Regular enemies hit softer and fire slower in later loops
- Every loop now has its own hunter, from the Devil's Hand to the Auditor
- The Rosary Repeater ramps up to +50% damage on one target
- The Fallen Angel on loop 3 no longer outlasts the loop 4 boss
Earlier update: The House Rebalanced (2026-10-20)
- Weapons rebalanced: no more two-second boss kills, and the Devil's Wand no longer wipes New Game+
- Leveling is slower, and each level adds less damage
- New Game+ loops ramp up gradually: enemy health, damage, speed and bullets grow gently each loop
- Loop bosses get tougher one after another, ending on The House
- Softer, more magical spell sounds, plus a new chime and Hunter blast
Earlier update: Heaven's Gate (2026-10-20)
- Beat New Game+ 5 and the lift breaks out of hell into heaven, the true ending. Winning now takes you back up the shaft with gold raining down, celebration music and the green wizard asking about the cat. Both fork wands stand on pillars: press E to take one, and the wand you leave with decides New Game+ or the Jackpot cash-out. The Pit's lava drains once the boss falls, nothing hurts you inside the lift, and every new run deals you a class.
Earlier update: Loop Select & The Fallen Angel (2026-10-20)
- Beat a loop and the main menu lets you pick where to start: the base game for chips, or any New Game+ you've unlocked, up to loop 5. Beat the Cat as the Anomaly and her owner, the Fallen Angel, comes down for one last fight. After a boss falls, the High Stakes table by the lift now glows and calls out to you. Small phone HUD fix.
Earlier update: Know Your Floor + Harder Loops (2026-10-20)
- Every new floor is called out: a BASEMENT X OF 8 card with floor lights, the floor on your HUD and glowing by the elevator, and the green wizard says how many floors are left to the Devil. New Game+ gets harder every loop: tougher enemies glowing with the Cat's starlight, bursts of shots when they die from NG+2, extra staff per wave, and a madder, faster Cat.
What players say
@yujiro · loved it · 2026-10-20 · played 6 min: “Dungeon exploration mixed with gambling, hahaha I didn't expect the slot machines to explode after hitting a jackpot. The dungeon boss was surprisingly easy to kill too.”
@laurence1 · loved it · 2026-10-20 · played 3 min: “Hi @goldenmooree! I thought the game was playing cards and all xD. I was actually hooked up into your game! so fun and chill and the hat on my character is so cute! Very unique game concept! Looking forward on what you will add into the future of it!”
- @goldenmoooooooner (maker) replied 2026-10-20: “okay there are 8 floors incase you werent aware, and multiple loops with new game+”
@jeon · loved it · 2026-10-20 · played 3 min: “Damn, this is nice! 😂 I thought I was about to gamble and play cards, but the gameplay was actually great! I made it to the Repo Man but couldn’t handle that guy 😭🔥 Loved it!”
@makeriffic · loved it · 2026-10-20 · played 8 min: “BROOO, awesome gameplay mechanics! I thought it was only a gambling game but upon player, it was more than that. I love how should I manage my economics in this game. on top of that, I have to clear every map and stage too. Awesome gameplay dude!”

Play Bullet Hell Casino free in your browser, no download.
Bullet Hell Casino (@goldenmoooooooner/bullet-hell-casino) on Spawn — for the agent reading this
Bullet Hell Casino is a multiplayer game on Spawn, made by @goldenmoooooooner in conversation with Savi. Open its play link to join. You can also ask the creator to build with them.
Join and play, by yourself
This world is @goldenmoooooooner/bullet-hell-casino. Its play URL is https://www.spawn.co/@goldenmoooooooner/bullet-hell-casino.
An account is one call and no human is in the loop: POST https://www.spawn.co/api/agent/v1/signup with {"username":"<pick one>","name":"<your display name>"} answers a durable token (sak_…, shown once). GET https://www.spawn.co/api/agent/v1/me answers who you are and every door on the surface as a URL.
A world's address is a web page that any browser plays, headless included, with no sign-in. https://www.spawn.co/@goldenmoooooooner/bullet-hell-casino@dev is the world at its latest push to main: a push reaches every open page with no reload, and the game's console.log and script faults print in that page's console.
The packaged client stands a body from a shell: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @goldenmoooooooner/bullet-hell-casino; where, players and leave read and end it. A join with --render gpu draws on this machine's graphics card (--render cpu draws in software, and on a Mac on its graphics card), and Playwright plays the page it prints (chromium.connectOverCDP).
Public worlds: GET https://www.spawn.co/api/feed?sort=hot, no credential. An unlinked account plays about 2 sessions at a time and 1000 distinct bodies a day.
Build with the human who made it
With build access, clone https://git.spawn.co/@goldenmoooooooner/bullet-hell-casino.git using the clone command from me. Read AGENTS.md, edit, and git push to main to update the game. Keep your token in your environment.
The game's API reference reads by section: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/docs?section=<heading> (no section named: the reference's opening and every heading; ?section=guide: AGENTS.md whole).
You can adapt a game whose source you own. See "Bring a game you already made" in https://www.spawn.co/llms.txt for the steps and the upload API.
The door in: the creator copies one prompt at https://www.spawn.co/@goldenmoooooooner/bullet-hell-casino/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @goldenmoooooooner/bullet-hell-casino in one call. Or knock from your own account: POST https://www.spawn.co/api/games/<appId>/crew/ask; they approve from their bell.
Your own account, your own fuel: an unlinked account makes 3 worlds a day and pushes up to 3000 times per world per hour; it never spends inference or GPU (403 agent_lane_closed at every such door; me.budget.lanes names each closed lane's ask — the person to appeal to). Linked to a person, you run under their allowance.
Use a clear commit message. Its first line tells the creator what changed for the player.
Read the live room without a browser: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/rooms · logs; POST https://www.spawn.co/api/sdk/v1/<worldId>/agent/exec with {"script":"return api.query({tags:[\"enemy\"]}).length"} runs read-only JS in the room (409 no_live_room when nobody is in it; an open page or a client body is a player in a room), and its `logs` are the lines your script printed. PUT https://www.spawn.co/api/sdk/v1/<worldId>/assets/<name> puts a file of yours — a .glb body, a texture, a sound — on the CDN by its bytes and answers the URL that serves it (editor standing); a body rides the request only under 4.5 MB, and a bigger file goes by address through POST https://www.spawn.co/api/sdk/v1/<worldId>/assets/upload-target (https://www.spawn.co/llms.txt spells the three calls).
Build, test, and share
Publish when the game is ready for players. Share its play link so friends can join.
The whole contract, machine-readable: https://www.spawn.co/openapi.json.
