| Alien Life Simulator (2021) | 5,890 | 40 |
| Alien Logic: A Skyrealms of Jorune Adventure (1994) | 71,670 | 26 |
| Alien Marauder (2021) | 1,714,298 | 422 |
| Alien Maze (2023) | 365,033 | 30 |
| Alien Mind (1988) | 1,130,235 | 74 |
| Alien Monster Bowling League (2009) | 203,665 | 13 |
| Alien Nations (1999) | 5,415,440 | 851 |
| Alien Odyssey (1995) | 49,261 | 44 |
| Alien Olympics 2044 AD (1992) | 291,243 | 87 |
| Alien on the Radar (2023) | 2 | 2 |
| Alien Outbreak 2: Invasion (2005) | 27,512 | 55 |
| Alien Paradise (2024) | 75,608 | 20 |
| Alien Rage (2013) | 4,573,266 | 3,540 |
| Alien Raiders (1981) | 459,836 | 40 |
| Alien Rampage (1996) | 292,478 | 121 |
| Alien Removal Division (2022) | 317,841 | 249 |
| Alien Robot Monsters (2015) | 10,538 | 28 |
| Alien Scumbags (2020) | 33,587 | 158 |
| Alien Shooter (2003) | 27,234,648 | 23,241 |
| Alien Shooter 2: Reloaded (2009) | 3,515,109 | 1,770 |
| Alien Shooter TD (2017) | 616,164 | 620 |
| Alien Shooter: Revisited (2009) | 460,824 | 233 |
| Alien Shooter: Vengeance (2006) | 522,855 | 483 |
| Alien Sky (2004) | 869,819 | 321 |
| Alien Slayers (2023) | 298,063 | 201 |
| Alien Soldier (1995) | 7,072,562 | 2,293 |
| Alien Space Bastards (2022) | 398 | 3 |
| Alien Spidy (2013) | 218,070 | 281 |
| Alien Stars (2005) | 1,814,362 | 236 |
| Alien Storm (1990) | 4,763,495 | 3,338 |
| Alien Swarm (2010) | 148,864,781 | 8,369 |
| Alien Syndrome (1986) | 2,397,123 | 1,485 |
| Alien Syndrome (2007) | 1,606,979 | 373 |
| Alien Trilogy (1996) | 6,155,476 | 3,141 |
| Alien Video Game Scientist (2024) | 0 | 0 |
| Alien Virus (1995) | 3,212,594 | 108 |
| Alien vs Predator (1994) | 10,152,134 | 435 |
| Alien vs Predator: The Last of His Clan (1993) | 8,435 | 34 |
| Alien vs. Predator (1993) | 4,609,106 | 1,175 |
| Alien vs. Predator (1994) | 5,285,166 | 2,005 |
| Alien vs. Predator (2004) | 322,146 | 84 |
| Alien vs. Predator 2 2D: Requiem (2007) | 2,152 | 7 |
| Alien vs. Predator 3D (2005) | 57,770 | 24 |
| Alien vs. Predator: The Last of His Clan (1993) | 39,662 | 53 |
| Alien World Millionaire (2020) | 0 | 0 |
| Alien Zombie Death (2010) | 67,932 | 56 |
| Alien Zombie Megadeath (2011) | 209,521 | 32 |
| Alien's Return (1983) | 1,108,538 | 58 |
| Alien: Blackout (2019) | 18,833,710 | 1,659 |
| Alien: Isolation (2014) | 1,172,152,031 | 270,180 |
| Alien: Resurrection (2000) | 48,700,334 | 2,423 |
| Alien: Rogue Incursion (2024) | 11,373,630 | 3,420 |
| Alienation (2016) | 6,831,905 | 8,240 |
| Alienators: Evolution Continues (2001) | 44,602 | 85 |
| Alienautics (2020) | 0 | 0 |
| Aliens (1982) | 10,436,226 | 485 |
| Aliens (1990) | 2,877,607 | 853 |
| Aliens (2021) | 12,114,170 | 582 |
| Aliens After Ava (2023) | 21,418 | 71 |
| Aliens Drive Me Crazy (2014) | 1,533,622 | 885 |
| Aliens in the Attic (2009) | 1,556,008 | 298 |
| Aliens Infestation (2011) | 272,412 | 187 |
| ALIENS INVADED OUR PLANET (2018) | 14,140 | 10 |
| Aliens Online (1998) | 40,444 | 26 |
| Aliens Strike (2021) | 364,986 | 77 |
| Aliens Versus Predator (1999) | 10,753,676 | 2,696 |
| Aliens Versus Predator 2 (2001) | 11,486,479 | 2,524 |
| Aliens versus Predator 2: Primal Hunt (2002) | 1,627,939 | 239 |
| Aliens versus Predator: Extinction (2003) | 4,016,921 | 1,349 |
| Aliens vs. Predator (2010) | 489,939,907 | 36,983 |
| Aliens vs. Predator: Requiem (2007) | 25,628,259 | 1,234 |
| Aliens: A Comic Book Adventure (1995) | 34,192 | 49 |
| Aliens: Colonial Marines (2013) | 140,764,696 | 23,944 |
| Aliens: Dark Descent (2023) | 79,037,539 | 27,426 |
| Aliens: Extermination (2006) | 2,437,160 | 464 |
