Spec builder ▸
Free, browser-based, no signup

Free in-browser tools for solo game devs

Small in-browser tools and curated resource hubs for solo game devs. The scope-lock tool, level builder, sprite generator, and sprite spec builder are interactive. The audio toolkit is a curation page. More tools shipping as content gaps surface.

Interactive · NEW Planning · in-browser

Scope-lock tool

For solo devs who keep starting projects and never finishing them. Decide in writing exactly what your game is and what it is not, watch a live scope meter tell you if it is finishable, and walk away with a scope contract plus a Claude prompt that turns it into a build order. It says no for you.

Open the scope-lock tool ▸
Interactive Platformer + top-down · in-browser

Level builder

Generate a platformer level (Mario-like) or a top-down level (original Zelda-like), then paint tiles to make it yours. Export the layout as a CSV or JSON tile grid that drops into Unity, Godot, or Phaser. Comes with a ready-to-paste Claude prompt that turns the grid into a playable level. Seed-based, CC0, runs entirely in your browser.

Open the level builder ▸
Interactive Procedural · 100% in-browser

Procedural sprite generator

Click "regenerate" until you find a sprite you like. Pick subject (creature, robot, character, item), size, palette. Each sprite has a seed you can save or share via URL. Output is CC0, drop it into your jam build, recolor it, ship a game with it. Generation runs entirely in your browser; nothing's uploaded.

Open the generator ▸
Interactive For 8-directional and isometric

Sprite spec builder

A form-driven tool that generates a personalized blank sprite sheet template, an AI image-gen spec doc, and an engine-side Claude prompt. Upload your sprite to preview it slotted into every direction, with auto-mirroring for left-facing cells. For Unity, Godot, Phaser, LOVE2D, and Pico-8.

Open the builder ▸
Curation SFX · music · DAWs

Audio toolkit for solo game devs

Every audio resource a solo dev needs in one page. SFX generators, free DAWs, CC-licensed music libraries, sound effect databases. With honest "best for" notes on each, no affiliate links.

Browse audio resources ▸
More tools shipping as the prompts and walkthroughs surface specific gaps.
Bookmark and check back.
In drafts Coming next

Tools on the roadmap

Each one fills a specific gap solo devs hit while shipping with Claude.