| .atr |
Atari Disk Image |
| .acx |
Atari ST Program |
| .fwd |
RollerCoaster Tycoon 3 Fireworks Display File |
| .frw |
RollerCoaster Tycoon 3 Fireworks Effects File |
| .ic1 |
Low Resolution Imagic Graphics File |
| .ic2 |
Medium Resolution Imagic Graphics File |
| .ic3 |
High Resolution Imagic Graphics File |
| .neo |
NeoChrome Bitmap Image |
| .ovl |
Rollercoaster Tycoon 3 Data File |
| .pi4 |
DEGAS Image |
| .pi5 |
DEGAS Bitmap Image |
| .pi6 |
DEGAS Bitmap Image File |
| .spc |
Software Publisher Certificate File |
| .sap |
Atari SAP Music File |
| .spk |
Deer Hunter Map File |
| .spu |
Spectrum 512 Image |
| .tn1 |
Tiny Low Resolution Image |
| .tn2 |
Tiny Medium Resolution Image |
| .tn3 |
Tiny High Resolution Image |
| .tny |
Atari Tiny Image |
| .ym |
Atari ST Audio File |
| .sndh |
Atari ST audio data |
| .pk1 |
XS game data |
| .d02 |
Fahrenheit game file |