OpenRFReturn Fire, native again

A faithful, from-scratch reimplementation of the 1996 classic, using the data from your own CD. Runs on macOS, Linux, Windows and in your browser through the gasm WebAssembly runtime.

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How it works

Faithful

Game logic, physics, AI and rendering are ported function by function from the original executable, in the same fixed-point maths. The renderer is verified pixel-identical against a reference implementation.

Your original data

Reads the sprites, maps, movies, sound effects and the orchestral score straight from the Return Fire CD. No assets are included or converted.

No emulator

Portable C11 with no emulator, no Wine and no virtual machine. Ready-to-run bundles for macOS (Apple Silicon and Intel), Linux (x86_64 and arm64) and Windows.

Runs on gasm

One openrf.wasm for macOS, Linux, Windows and the browser, on the gasm WebAssembly game runtime. Deterministic, so the same inputs give the same frames and sound on every runner.

Running on gasm

In the browser

The same engine as a WebAssembly module on the gasm runtime. Choose your CD folder once and play in Chrome, Edge, Firefox or Safari, with sound, gamepads and two players on one keyboard.

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Complete experience

Intro movies, the bunker lift, all four vehicles, turrets, drones, the submarine, soldiers, the flag hunt, victory movies and high scores.

Built for gasm

Every version of OpenRF (Return Fire (gasm).app on the Mac, the Linux and Windows bundles and the browser) is one WebAssembly module, openrf.wasm, running on gasm, a portable game runtime. The same inputs give the same frames and sound on every runner, checked hash for hash. Download a bundle, play in the browser or read Running on gasm.

Screenshots