Pokémon Crystal
You supply your own Pokémon Crystal ROM (USA/Europe, 2,097,152 bytes). It is read in the browser and never uploaded. v1.1 sha1 f2f52230b536214ef7c9924f483392993e226cfb (the ROM this build reproduces), v1.0 sha1 f4cd194bdee0d04ca4eac29e09b8e4e9d818c133.
Files are read on this device. They are never uploaded.
Keyboard and mouse recommended.
The game downloads only after you press Play. Sound starts off.
Controls
| Arrow keys | D-pad |
| X | A |
| Z | B |
| Enter | Start |
| Shift | Select |
| Gamepad | standard mapping |
| Touch | on-screen Game Boy pad on phones and tablets |
Save in game the normal way (START → SAVE). The battery save is kept in this browser's storage and survives a reload. Clearing site data removes it. Save inside the game before exporting a backup. Clearing browser data can erase progress.