Sinistar.GS
| Year | 2026 |
|---|---|
| Publisher | Ken Grey |
| Developers | Ken Grey |
| RAM Requirement | 2 meg RAM |
| Control | Keyboard, Joystick, SNES MAX |
| Other Requirements | About 1 MB free. Stock 2.8 MHz works. Accelerator recommended. GS/OS. |
| System 6 Compatible | Yes |
| Hard Drive Installable | Yes |
| Release Status | Freeware |
About
Sinistar.GS is Ken Grey's 2026 port of the 1982 Williams arcade game to the Apple IIGS. It aims to play like the original. The 6809 arcade source is the guide for workers, warriors, planetoids, crystals, and Sinistar himself. Speech and effects are resampled arcade recordings played through the Ensoniq DOC.
Needs about 1 MB free, so 2 MB in the machine. It runs at stock 2.8 MHz. An accelerator is recommended. At stock speed, turn on the FPS limiter in the configuration screen so the frame rate does not flip between 30 and 60. Keyboard is I J K L or the keypad to turn, Shift or Option to thrust, Open-Apple to fire, Space for a Sinibomb. Analog joystick and a SNES MAX card are optional. Press C at the front end for difficulty, crystal attraction, and input setup.
v0.5.2 is an 800K ProDOS image that does not boot. Start GS/OS, then mount it. Sinistar is a Williams Electronics title. This archive does not host the disk. Get it from the GitHub release.
Downloads
Screenshots
