| PC/MS-Windows pack. |  Alien Mayhem Model 714060 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Maze Model 1631090 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Monopoly Model 1137210 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien On The Radar Model 2185280 | 20?? | Steam Valve Corp. |
| MSX 3.5in disk | Alien Panic Hb | 20?? | Oniric Factor Spain |
| PC/MS-Windows pack. | Alien Planet Explorer Model 1617020 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Planet Survival Model 2345480 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Planet Model 740450 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Prop Hunt Model 1812580 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Rage - Unlimited Model 217920 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. |  Alien Rage Demo Model 257190 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Rampage Model 516440 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Revival Model 770830 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Robot Monsters Model 391250 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Scumbags Demo Model 1340790 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Scumbags Model 1252410 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Shepherd Model 1808820 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Shooter 2 Reloaded Demo Model 33160 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Shooter Demo Model 33140 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Shooter in Space Cradle - Virtual Reality Model 1110870 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Shooter Revisited Demo Model 33150 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Shooter TD Demo Model 607710 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Shooter Model 33100 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Simulator Model 1160730 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Slayers Demo Model 2230670 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Slayers Model 2218140 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Soldier Model 71116 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Space Bastards Model 1886480 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Spidy Model 207000 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Squatter Model 1131750 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Storm Model 34315 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Street Battle Model 1221070 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Swarm - Reactive Drop Model 563560 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Task Force Model 2005670 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Time Model 2056410 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Town Invasion Demo Model 2136370 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Town Invasion Model 1950590 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Up Demo Model 2256640 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Up Model 2251840 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | Alien Valley Model 419570 | 20?? | Steam Valve Corp. |
