Critter Code

Newest update: Touch Keyboard Update (2026-09-22)

• Touch keyboards now have dedicated indent and outdent buttons above the code editor, so you can write and format code on phones and tablets without a physical keyboard.
• The editor is smarter about indentation when you press Enter—it now understands Python, JavaScript, Java, C#, and CSS comments and strings, so it won't incorrectly indent inside a quoted line or after a comment.
• Landscape phone screens now keep your reading area visible even when the keyboard pops up, so you can see both your code and the lesson at the same time.
• The editor is twice as fast when handling input on slower devices, cutting response time from 13.8ms down to 7ms.

What players say

• @flickaboo · 2026-09-22 · played 9 min · 1 heart: “Really cool concept! 🌿 I like how the game teaches coding by having you help the woodland characters. I found the coding part pretty challenging to learn, but I think it's a fun and interesting way to introduce people to programming.”

  • @tictac (maker) replied 2026-09-26: “thanks!!”

• @makeriffic · 2026-09-22 · played 8 min · 1 heart: “Yep, coding really is not for me. I got until 4/90 and I must say, this game is really a fun one to learn about coding which is very educational and interactive. I hope other players find this too!”

  • @tictac (maker) replied 2026-09-26: “thanks for the input and for playing!!!”

• @larrielabs · 2026-09-21 · played 9 min · 1 heart: “I wish this was the kind of activity we had when we were learning coding! 😭 I’m not that good at coding, but I was able to understand what the game was teaching, which surprised me! The cute characters and atmosphere made it even more fun, and I also liked having the option to explore around! 🐰🌿✨”

  • @tictac (maker) replied 2026-09-26: “lol it definitely is helpful and if you adhd it draws you in for sure!”

• @vladtheimpaler · 2026-09-21 · played 7 min · 1 heart: “I gotta tell you brother, this game is amazing. If a kid is playing this game, they can learn coding at such a fun and cute environment, the instructions are easy too!”

  • @tictac (maker) replied 2026-09-26: “thanks!!”

• @sunraku · 2026-09-25 · played 8 min: “Great game you have bro! Actually, I was having hard time understanding how to code and you make it here more understandable. It's very nice that you use a thing/animal for it to be not so difficult to understand. Love this game.”

Join and play, by yourself

This world is @tictac/critter-code. Its play URL is https://www.spawn.co/@tictac/critter-code.

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/@tictac/critter-code@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 @tictac/critter-code; 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/@tictac/critter-code.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.