| Air Combat 22 | 1995 | arcade |
| Air Conflicts - Aces of World War II | 2009 | psp |
| Air Conflicts - Pacific Carriers | 2012 | ps3, ps4, switch, xbox360 |
| Air Conflicts - Secret Wars | 2011 | ps3, switch, xbox360 |
| Air Conflicts - Vietnam | 2013 | ps3, ps4 |
| Air Conflicts - Vietnam | 2013 | xbox360 |
| Air Mail | 2018 | switch |
| Air Management '96 | 2001 | ps1 |
| Air Management '96 | 1996 | saturn |
| Air Management - Oozora ni Kakeru | 1992 | genesis, snes |
| Air Management II - Koukuu Ou o Mezase | 1993 | snes |
| Air Management II - Koukuuou o Mezase | 1994 | genesis |
| Air Missions Hind | 2016 | ps4 |
| Air Missions: Hind | 2020 | switch |
| Air Missions: Hind | 2017 | xboxone |
| Air Raid 3 | 2004 | ps2 |
| Air Ranger - Rescue Helicopter | 2001 | ps2 |
| Air Ranger 2 - Rescue Helicopter | 2002 | ps2 |
| Air Ranger 2 Plus - Rescue Helicopter | 2003 | ps2 |
| Air Traffic Chaos | 2008 | nds |
| AirAssault - The Red Mercury Missions | 1995 | ps1 |
| AirForce Delta | 1999 | dreamcast |
| AirForce Delta | 2000 | gbc |
| AirForce Delta II | 2002 | xbox |
| AirForce Delta Storm | 2001 | xbox |
| Airborne Kingdom | 2020 | switch |
| Airline Pilots | 1999 | arcade |
| Airport Mania - First Flight | 2010 | wii |
| Airport Simulator 2019 | 2018 | ps4 |
| Aitakute... - Your Smiles in My Heart | 2000 | ps1 |
| Aka-chan Doubutsuen | 2004 | gba |
| Akihabara Dennou-gumi Pata Pies! | 1999 | dreamcast |
| Akihabara: Feel the Rhythm Remixed | 2018 | switch |
| Akogare Girls Collection - Lovely Youchien Nikki | 2009 | nds |
| Akogare Girls Collection - Mister Donut DS | 2010 | nds |
| Akogare Girls Collection - Ohanaya-san Monogatari | 2011 | nds |
| Albaria no Otome - Uruwashi no Seikishitachi | 1998 | ps1 |
| Allied Ace Pilots | 2008 | nds |
| The Amazing American Circus | 2021 | ps4, switch, xboxone |
| Amber Isle | 2025 | switch |
| America Oudan Ultra Quiz - Shijou Saidai no Tatakai | 1991 | nes |
| America's Next Top Model | 2010 | nds |
| American Gladiators | 1991 | genesis, nes, snes |
| Angel Collection - Mezase! Gakuen no Fashion Leader | 2003 | gba |
| Angel Graffiti - Anata e no Profile | 1996 | ps1, saturn |
| Angel Profile | 2008 | ps2 |
| Angelique | 2002 | gba |
| Angelique | 1994 | snes |
| Angelique - Premium Box | 1994 | snes |
| Angelique Duet | 2006 | nds |
| Angelique Duet | 2000 | ps1 |
| Angelique Duet | 1998 | saturn |
| Angelique Etoile | 2004 | ps2 |
| Angelique Special | 1995 | pcfx, saturn |
| Angelique Special | 1999 | ps1 |
| Angelique Special 2 | 1996 | pcfx, ps1, saturn |
| Angelique Trois | 2000 | ps2 |
| Angelique Trois - Aizouban | 2001 | ps2 |
| Animal Crossing | 2001 | gc |
| Animal Crossing - City Folk | 2008 | wii |
| Animal Crossing - Happy Home Designer | 2015 | 3ds |
| Animal Crossing - Let's Go to the City | 2008 | wii |
| Animal Crossing - New Leaf | 2013 | 3ds |
| Animal Crossing - New Leaf - Welcome Amiibo | 2016 | 3ds |
| Animal Crossing - Wild World | 2005 | nds |
| Animal Crossing - Wild World | 2016 | wiiu |
| Animal Crossing: New Horizons | 2020 | switch |
| Animal Life - Doubutsu Fureai Seikatsu | 2009 | wii |
| Animal Mania - Dokidoki Aishou Check | 2002 | gba |
| Animal Paradise | 2007 | nds |
| Animal Paradise - Wild | 2009 | nds |
| Animal Planet - Emergency Vets | 2004 | nds |
| Animal Planet - Vet Collection | 2010 | nds |
| Animal Planet - Vet Life | 2009 | nds, wii |
| Animal Resort - Dobutsuen o Tsukurou!! | 2013 | 3ds |
| Animastar | 2000 | dreamcast |
| Anime Studio Story | 2020 | ps4, switch |
| Anky's Ruiterschool | 2008 | nds |
| Anna & die Liebe | 2009 | nds |
| Ano Ko Doko no Ko | 1998 | ps1 |
| Another Century's Episode Portable | 2011 | psp |
| Another Memories | 1998 | ps1, saturn |
| Anpfiff - Der RTL Fussball-Manager | 2001 | gbc |
| Apache - Air Assault | 2010 | ps3, xbox360 |
| Apple Town Monogatari - Little Computer People | 1987 | fds |
| Aqua Living - Terebi de Nagameru Sakanatachi | 2010 | wii |
| Aqua TV | 2016 | wiiu |
| Aqua Vita | 2007 | ps3 |
| Aqua World - Umi Monogatari | 1995 | 3do, saturn |
| AquaSpace | 2010 | wii |
| Aquanaut no Kyuujitsu | 1995 | ps1 |
| Aquanaut no Kyuujitsu - Memories of Summer 1996 | 1996 | ps1 |
| Aquanaut no Kyuujitsu 2 | 1999 | ps1 |
| Aquanaut's Holiday | 1996 | ps1 |
| Aquanaut's Holiday - Hidden Memories | 2008 | ps3 |
| Aquarium by DS | 2007 | nds |
| Aquatopia | 2007 | ps3 |
| Aquazone - Desktop Life | 1996 | saturn |
| Aquazone - Desktop Life Option Disc Series 1 - Angel Fish | 1996 | saturn |
| Aquazone - Desktop Life Option Disc Series 2 - Black Molly | 1996 | saturn |