Gradius III Co-op
Load your own dump of Gradius III (USA) for the SNES. The page checks it, applies the co-op patch, and runs it with snes9x. The game file never leaves your browser.
You're joining a friend's game as player 2. Their game streams to you here and your controls fly the second Vic Viper. Press Start (Enter) to join once they're in a stage.
Drop your .sfc file here, or click to choose it
| Player 1 | Player 2 (same keyboard) | |
| Move | Arrows | IJKL |
| SNES B / Y | X / Z | N / B |
| SNES A / X | S / A | H / G |
| Start | Enter | 2 (join) |
| Move | Arrows |
| SNES B / Y | X / Z |
| SNES A / X | S / A |
| Join | Enter |
Gamepads work too: on the host the first one is player 1 and the second is player 2; a joining friend's first gamepad is player 2.