In closed development
Make games in your browser. From first sketch to a playable link.
One studio for art, levels, sound and logic, running on our own 2D and 3D engine. No installs, no exports, no glue code.
How it works
Idea to playable, without leaving the tab.
Most game projects die in the gaps between tools. Caustic removes the gaps.
Build on one canvas
Paint sprites, lay tiles, place entities and wire up behavior in the same scene. Every tool edits the same project, so nothing gets exported and re-imported.
Play it instantly
Hit play and the engine runs your game right where you built it. The editor and the game share one renderer, so what you see is what ships.
Share a link
Publish a play link anyone can open in a browser. No download, no store page, no build pipeline to babysit.
The studio
One canvas. Every tool opens over it.
Your world lives on a single stage. Art, sound and logic editors slide in on top of it, so you always see your edit in the game it belongs to.
Pixel art
Layers, palettes and frames, drawn straight onto your sprites.
Tiles & levels
Tilesets, autotiling, rooms, collision and cameras.
Animation
Frame clips, skeletons and animation state machines.
Audio
Mixing, effects, spatial sound and adaptive music.
Behavior
State machines and game flow, compiled for the engine.
Dialog & cutscenes
Branching conversations and scripted sequences.
Game UI
HUDs and menus rendered at native resolution.
Lighting & VFX
Dynamic lights, shadows, particles and shaders.
The engine
A real engine, built for the browser.
Caustic isn't a wrapper around someone else's runtime. We wrote the engine, so the studio and the game speak the same language, with no royalty on what you ship.
Copilot · Built with Claude
An assistant that edits your game, not just your text.
Caustic's copilot is built on Claude by Anthropic. It understands your scenes, components and behavior, and proposes changes you stay in control of.
Ask in plain language
“Make the door open when the player has the key.” The copilot turns it into a list of concrete edits to your project.
Review before anything changes
Every suggestion is a proposal you can read, tweak or reject. Nothing touches your game until you approve it.
Generate the first draft
Sprites, tiles, shaders, dialog and sound to start from, so a blank project is never really blank.
Who it's for
Easy to start. No ceiling once you're in.
Your first game
Nothing to install, a copilot that explains as it builds, and a link you can send to friends the same day.
Indie & solo
Every discipline in one place, so one person can carry a game from idea to release without a toolchain.
Small teams
One shared project, a deterministic engine and multiplayer foundations that hold up as the game grows.
Build with us early.
Caustic is in closed development. We're letting creators in a few at a time and shaping the studio around what they make.
One email when your invite is ready. No newsletter spam.