| Game Name | System |
|---|
| Alien Dropout (1982)(R.M.P. Hanson)[a] [SSD] | Electron |
| Alien Dropout (1982)(Superior)[DROPOUT start] [SSD] | BBC Micro |
| Alien Dropout (1982)(Superior)[RUN start] [UEF] | BBC Micro |
| Alien Dropout (1982)(Superior)[bootfile-BBC&Electron] [SSD] | BBC Micro |
| Alien Dropout (1982)(Superior)[h TSTH][bootfile] [SSD] | BBC Micro |
| Alien Dropout (1982)(Supreme Software) [UEF] | Electron |
| Alien Egg | Atari 800 |
| Alien Encounter & Formula 1 & Heliot (F) & Le Millionaire (F) & Thanatos | CPC |
| Alien Encounter v.II (1984)(D.Firth) | Atari 800 |
| Alien Evolution (1987)(Gremlin Graphics) | ZX Spectrum Z80 |
| Alien Evolution (1987)(Gremlin Graphics) | ZX Spectrum (TAP) |
| Alien Evolution (1987)(Gremlin Graphics)[a2] | ZX Spectrum Z80 |
| Alien Evolution (1987)(Gremlin Graphics)[a] | ZX Spectrum Z80 |
| Alien Fires 2199 AD (1987)(Paragon Software)(Disk 1 of 2) | Atari ST |
| Alien Fires 2199 AD (1987)(Paragon Software)(Disk 2 of 2) | Atari ST |
| Alien Fires 2199 Ad (1986)(Electronic Arts Inc) | DOS |
| Alien Fish Finger | Amiga |
| Alien Front (Rev A) | MAME |
| Alien Front (Rev T) | MAME |
| Alien Gate (CD-i) | CD-I |
| Alien Guerilla (19xx)(-) | ZX Spectrum Z80 |
| Alien Highway (1986)(Vortex Software) | ZX Spectrum Z80 |
| Alien Highway (1986)(Vortex Software)[a2] | ZX Spectrum Z80 |
| Alien Highway (1986)(Vortex Software)[a3] | ZX Spectrum Z80 |
| Alien Highway (1986)(Vortex Software)[a4] | ZX Spectrum Z80 |
| Alien Highway (1986)(Vortex Software)[a5] | ZX Spectrum Z80 |
| Alien Highway (1986)(Vortex Software)[a6] | ZX Spectrum Z80 |
| Alien Highway (1986)(Vortex Software)[a] | ZX Spectrum Z80 |
| Alien Highway - Highway Encounter 2 (UK) (1986) | CPC |
| Alien Hominid | GCN |
| Alien Hominid (Australia) (En,Fr,De,Es,It,Nl) | PS2 |
| Alien Hominid (E)(Trashman) | GBA |
| Alien Hominid (USA) | PS2 |
| Alien Incident (1996)(Housemarque) | DOS |
| Alien Intervention (UK) (1991) | CPC |
| Alien Intervention (UK) (1991) [a1] | CPC |
| Alien Invaders | MAME |
| Alien Invasion | MAME |
| Alien Invasion (1994)(Archimedes World) | Archimedes |
| Alien Invasion (1994)(Archimedes World)[a] | Archimedes |
| Alien Invasion (1995)(Capstone) | DOS |
| Alien Invasion Part II | MAME |
| Alien Kill (1984)(Mastertronic) | ZX Spectrum Z80 |
| Alien Kill (1984)(Mastertronic) | ZX Spectrum (TAP) |
| Alien Kill (1984)(Mastertronic)[a2] | ZX Spectrum Z80 |
| Alien Kill (1984)(Mastertronic)[a] | ZX Spectrum Z80 |
| Alien Legacy (1993)(Sierra Online) | DOS |
| Alien Logic (1994)(Mindscape Inc) | DOS |
| Alien Maze (1983)(CRL Group) | ZX Spectrum Z80 |
| Alien Olympics (1994)(Mindscape Inc) | DOS |
| Alien Olympics 2044 AD (Europe) | GB |
| Alien Poker (L-2) | MAME |
| Alien Poker (L-6 French speech) | MAME |
| Alien Poker (L-6) | MAME |
| Alien Quake (1997)(Alien Quake Team) | DOS |
| Alien Rain (1981)(Broderbund)[nib] | Apple2 |
| Alien Rampage (1996)(Softdisk Publishing) | DOS |
| Alien Rampage (1996)(Softdisk Publishing)(Rev) | DOS |
| Alien Research Center (1989)(Zenobi Software) | ZX Spectrum Z80 |
| Alien Resurrection (E) | PSX |
| Alien Resurrection (USA) | PSX2PSP |
| Alien Resurrection [U] | PSX |
| Alien Rupture (1984)(Green Fish Software Enterprise) | ZX Spectrum Z80 |
| Alien Rupture (1984)(Green Fish Software Enterprise) | ZX Spectrum (TAP) |
| Alien Sector | MAME |
| Alien Soldier (Europe) | Genesis |
| Alien Soldier (Japan) | Genesis |
| Alien Star | MAME |
| Alien Storm | Amiga |
| Alien Storm (1991)(U.S. Gold) | Atari ST |
| Alien Storm (1991)(U.S. Gold)[cr Bostich][t] | Atari ST |
| Alien Storm (1991)(U.S. Gold)[cr Elite][t] | Atari ST |
| Alien Storm (1991)(U.S. Gold)[cr Elite][t][b] | Atari ST |
| Alien Storm (1991)(US Gold) | ZX Spectrum (TAP) |
| Alien Storm (E) | C64 Tapes |
| Alien Storm (Europe) | SMS |
| Alien Storm (F) (19xx) | CPC |
| Alien Storm (F) (19xx) [b1] | CPC |
| Alien Storm (Japan, 2 Players) (FD1094 317-0146) | MAME |
| Alien Storm (Japan, 2 Players) (bootleg of FD1094 317-0146 set) | MAME |
| Alien Storm (Mega-Tech) | MAME |
| Alien Storm (US, 3 Players) (FD1094 317-0147) | MAME |
| Alien Storm (US, 3 Players) (bootleg of FD1094 317-0147 set) | MAME |
| Alien Storm (World) | Genesis |
| Alien Storm (World, 2 Players) (FD1094 317-0154) | MAME |
| Alien Storm (World, 3 Players) (FD1094 317-0148) | MAME |
| Alien Storm (World, 3 Players) (bootleg of FD1094 317-0148 set) | MAME |
| Alien Storm (bootleg, set 1) | MAME |
| Alien Storm (bootleg, set 2) | MAME |
| Alien Swarm (1983)(Titan Programs) | ZX Spectrum (TAP) |
| Alien Swarm (1983)(Titan Programs) | ZX Spectrum Z80 |
| Alien Swarm (1983)(Titan Programs)[a] | ZX Spectrum Z80 |
| Alien Swirl (1983)(Amcom)[AS1 start] [SSD] | BBC Micro |
| Alien Swirl (1983)(Amcom)[SWIRL start] [SSD] | BBC Micro |
| Alien Swirl (1983)(Amcom)[a][AS1 start] [SSD] | BBC Micro |
| Alien Swirl (1983)(Amcom)[a][SWIRL start] [SSD] | BBC Micro |
| Alien Swirl (1983)(Amcom)[h TSTH][bootfile] [SSD] | BBC Micro |
| Alien Syndrome | Amiga |
| Alien Syndrome (1987)(ACE Software) | ZX Spectrum (TAP) |
| Alien Syndrome (1987)(ACE Software)(128k)[t] | ZX Spectrum Z80 |
