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Answer · updated

How to make a browser game with AI (vibe coding guide)

TL;DR

Pick a browser engine (Three.js is used by 65% of Vibe Jam 2026 games), describe one core loop to an AI coding tool, play and iterate with follow-up prompts, keep it instant with no login, and ship it on its own domain.

The short version

  1. Pick a browser engine. In our data, 65% of Vibe Jam 2026 games used Three.js, and the jam recommended it. Phaser and plain Canvas are common 2D choices. See engine stats.
  2. Describe one core loop to your AI coding tool. Name the genre, the main mechanic and the win/lose condition. Need an idea? Spin the Prompt Slot Machine or fuse two games in the Remix Lab.
  3. Get it playable first, then iterate. Play every build and steer with follow-up prompts. Vibe Jam entries had to be at least 90% AI-written, so the prompts did most of the work.
  4. Keep it instant. The jam required no login, no signup and no heavy loading screen, and a single domain per game.
  5. Decide on multiplayer and mobile early. 37% of the jam games we list support online multiplayer and 56% are mobile-ready.
  6. Ship it and share the prompt. Post the link, then share your prompt here to get the verified badge.

FAQ

Do I need to know how to code?

Vibe Jam 2026 entries had to be at least 90% AI-written code, so most of the code can come from prompts. You still direct, test and decide what stays.

Which AI tool should I use?

Creators on Vibe1Up have explicitly mentioned Claude Code, Cursor, Codex, Claude, Grok and others; see AI games by tool. We don't rank the tools.

Which engine should I start with?

Three.js is the most common in our data and was the jam's recommended engine.

Related: All answers · All games · By engine · By genre · Prompt Slot Machine