SLAPJAM.AI

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How to make the best AI game

You have two days. The winning move is to let AI do the parts you are slow at and spend your own time on the one thing that makes the game fun. Pick one tool per job from the list below, keep the scope tiny, build in portrait from the first minute and test in a browser before you polish anything. Sponsored tools support the jam and are listed first in their category.

Writing code

Ziva

AI agent that lives inside the Godot editor. It writes GDScript, builds scenes and nodes, and fixes errors in place, so a solo dev can ship a full game in a weekend. First prize includes a month of Ziva Ultra.

Cursor

AI-first code editor. Excellent for any engine whose project is plain text: Godot, Phaser, Unity C# scripts.

Claude Code

Terminal coding agent that reads your whole project, edits many files at once and runs your build and tests.

Codex

OpenAI’s coding agent, in the cloud and in your terminal, for larger tasks you can hand off and review.

Ludus AI

AI toolkit for Unreal Engine: C++ and Blueprints, scenes, sound, models and VFX from inside the editor.

Bezi

AI assistant for Unity projects. It indexes scenes, prefabs and scripts, and its agent mode applies reviewable changes.

Summer Engine

Prompt-to-game engine built on Godot 4. Describe the game, get a real project, export to web.

Music

Suno

Full songs and loops from a text prompt. Ask for a loopable instrumental in your game’s mood and export a few variations.

Udio

Another strong music generator, good for stingers, menus and short themes.

Voice and sound effects

ElevenLabs

Character voices, narration and a text-to-sound-effects model for jumps, hits, coins and UI clicks.

Images and pixel art

Retro Diffusion

Pixel-art model that outputs clean sprites, tiles and animations at real pixel sizes. The fastest path to a consistent 2D look.

ChatGPT

Image generation and editing for concept art, backgrounds, icons and store art, with good text rendering.

Claude

Art direction, colour palettes, prompt writing, and it produces SVG icons and UI elements directly.

Midjourney

Painterly key art and mood boards. Great for your itch.io cover and social posts.

3D models

Meshy

Text and image to 3D with textures and rigging. Exports GLB that drops straight into Godot or Unity.

Tripo

Fast text-to-3D and image-to-3D with clean topology options for game-ready meshes.

Rodin

High-detail image-to-3D generation for hero props and characters.

Hunyuan3D

Tencent’s open 3D generation models, usable online or self-hosted.

Luma Genie

Quick, stylised text-to-3D for props you need in bulk.

Engines

Godot

Our recommendation. Free, small web builds, portrait projects in two settings, and the best AI tooling support. See the export walkthrough.

Unity

Web export works; expect larger builds and longer load times on phones.

Phaser

JavaScript 2D framework. If your coding agent is strongest at web code, this is the shortest path to a browser game.

Tips that win jams