A
- A-10 Cuba! (1996) Win, Mac
- A Collection of Activision Classic Games for the Atari 2600 (1998) PS1
- A Collection of Classic Games from the Intellivision (1999) PS1
- A Mind Forever Voyaging (1985) Commodore 128
- Activision Anthology (2002) PS2
- The Activision Decathlon (1983) ATR26, Atari 5200, ATR, ColecoVision, C64, MSX
- Activision Game Vault: Volume 1 (1997) Win
- Activision Game Vault: Volume 2 (1997) Win
- Activision Game Vault: Volume 3 (1997) Win
- Activision Hits: Remixed (2006) PSP
- Activision's Atari 2600 Action Pack (1995) Win
- Activision's Atari 2600 Action Pack 2 (1995) Mac, Win
- Activision's Atari 2600 Action Pack 3 (1995) Win
- Activision's Commodore 64 15 Pack (1995) Win
- The Adventure Collection (1995) DOS, Mac, Win
- The Adventurers (1992) Ami
- The Adventures of Rad Gravity (1990) NES
- After Burner (1987) Ami, CPC, ST, C64, MSX, ZX
- After Burner II (1989) Ami
- Alcatraz: Prison Escape (2001) Win
- Alcazar: The Forgotten Fortress (1985) AppII, ColecoVision, C64, MSX
- Alex DeMeo's Title Match Pro Wrestling (1987) ATR26
- Alienators: Evolution Continues (2001) GBA
- Aliens: The Computer Game (1986) CPC, AppII, C64, ZX
- Alien vs. Predator (1993) SNES
- Alien vs Predator: The Last of His Clan (1993) Game Boy
- Altered Beast (1988) Ami, CPC, ST, C64, MSX, ZX
- Alter Ego (1986) AppII, C64, DOS
- Alundra 2: A New Legend Begins (2000) PS1
- The Amazing Spider-Man (2012) X360, PS3, 3DS, NDS, Wii, iOS, Android, Win
- American Chopper 2: Full Throttle (2005) Win
- Angry Birds Trilogy (2012) PS3, X360, 3DS
- Animal Planet: Emergency Vets (2009) NDS
- Animal Planet: Vet Life (2009) NDS, Wii
- Apocalypse (1998) PS1
- Arcade Zone (2009) Wii
- Archon: The Light and the Dark (1989) NES
- Armed and Dangerous (UK Release)(2004) Win
- Arthur: The Quest for Excalibur (1989) Ami, Mac
- Asteroids (1998) GBC, PS1, Win
- Autocracy (2002) Win
Read more about this topic: List Of Activision Games