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orbfall

A free browser game — play it in your browser, no install. A browser game a coding agent built with DriftEngine from one prompt

by @drftrun · drftrun/orbfall on GitHubLANG TypeScriptHOSTED ON ORBFALL.DRIFTENGINE.DEVUPDATED 12 Oct 2026

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Controls: Keyboard: WASD or the arrows to steer, R to restart, Space or Enter to play…

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From the README

A game built on DriftEngine: pilot a hovering orb across a floating island at dusk, gather glowing crystals, and keep clear of the boulders rolling at you. A run lasts 60 seconds; a crystal is worth a point and a fall off the edge costs three.

Play it at orbfall.driftengine.dev, in any current browser.

src/main.ts is the program and src/*.drs are its rules in DriftScript. AGENTS.md is written for a coding agent working in this project, and the driftengine skill in .agents/skills/ and .claude/skills/ teaches it the engine.

Read the full README on GitHub →

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