It is a WebAssembly-compiled version of the emulator via Emscripten.
Key bindings
Z - start/pause the game
E - jump
Q - fire
A/W/S/D - move
Try it now
Source code
You can find the original source code here.
It is a WebAssembly-compiled version of the emulator via Emscripten.
Z - start/pause the game
E - jump
Q - fire
A/W/S/D - move
You can find the original source code here.