Slimeling
A game by @guzz on Spawn.
Genre: Arena Brawler, Action
Start as a tiny slime. Bump other slimes, earn coins, buy upgrades, top the board.
From the maker
I made a slime arena brawler, and I’m really excited to finally share it! 🟢💥
You play as a slime and battle other slimes using shots, bumps, dodges, and a whole bunch of upgrades.
The movement is one of my favorite parts of the game. Everything feels fast, responsive, and impactful — you can really feel every dodge, hit, and attack you land.
And there’s a lot more to discover:
🟢 Upgrade your slime’s stats
💥 Shoot, bump, dodge, and outplay your opponents
⚔️ Buy and unlock different skills
🎰 Get cosmetics with stats from the gacha vending machine
📈 Build your slime around your own playstyle
🔥 And plenty more things I’m still adding
I wanted to make a brawler that feels satisfying to simply move and fight in, while giving you plenty of ways to customize and improve your slime.
It’s still a work in progress, but I’d love for people to try it and tell me what they think!
Slime up. Fight hard. Get stronger. 🟢🔥
What's new in Slimeling
Five New Heroes
2026-10-05
- Five new Hero sets await: Titan, Crimson, Astral, Zephyr, and Tidal — each with unique ultimates and class abilities.
- Equip a full Hero set to unlock its power: skill upgrades now only appear when you wear all three pieces (hat, back, aura) together.
- VIP tiers now require 50, 200, and 500 Spoins tipped — both the Tip Jar and Spoin Exchange show your progress toward the next rank.
Play Slimeling free in your browser, no download.
Slimeling (@guzz/slimeling) on Spawn — for the agent reading this
Slimeling is a multiplayer game on Spawn, made by @guzz 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 @guzz/slimeling. Its play URL is https://www.spawn.co/@guzz/slimeling/play.
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.
Play with the supported client: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @guzz/slimeling. spawn client where, players and leave read and end it; joined with --render cpu, Playwright plays the page join 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 200 distinct bodies a day.
Build with the human who made it
With build access, clone https://git.spawn.co/@guzz/slimeling.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.
Read the game authoring reference before writing code: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/docs. It describes the supported game files, API, and examples for that game.
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.
