| Aqua Rush (1999) | 127,326 | 89 |
| Aqua Teen Hunger Force Zombie Ninja Pro-Am (2007) | 364,428 | 273 |
| Aqua Vita (2007) | 171,163 | 6 |
| Aquaculture Land: Fish Farming Simulation (2022) | 78,391 | 37 |
| Aquadine (2021) | 42,644 | 127 |
| Aquales (1991) | 18,254 | 60 |
| Aquaman: Battle for Atlantis (2003) | 11,009,399 | 354 |
| Aquaman: War of the Water Worlds (1996) | 684 | 6 |
| Aquamarine (2022) | 3,318,900 | 512 |
| Aquanaut's Holiday (1995) | 344,652 | 147 |
| Aquanaut's Holiday: Hidden Memories (2008) | 495,078 | 235 |
| AquaNimble (2016) | 1,171,936 | 5 |
| AquaNox (2001) | 3,511,317 | 679 |
| AquaNox 2: Revelation (2003) | 423,517 | 612 |
| AquaNox: Deep Descent (2020) | 3,195,295 | 967 |
| Aquapark Tycoon (2025) | 98,534 | 44 |
| Aquapazza: Aquaplus Dream Match (2011) | 1,979,505 | 1,759 |
| Aquaria (2007) | 1,905,678 | 1,119 |
| Aquarist (2022) | 3,980,137 | 1,288 |
| Aquarist VR (2022) | 4,060 | 27 |
| Aquarium (1996) | 265,167 | 168 |
| Aquarium at August 32nd (2024) | 1,885 | 7 |
| Aquarium Designer (2021) | 539,867 | 385 |
| Aquarium Land (2024) | 13,990,169 | 584 |
| Aquarium Travels (2022) | 318 | 4 |
| Aquarius: An Aquatic Experience (2007) | 28 | 1 |
| AQUARYOUNS World (2019) | 1,596 | 3 |
| Aquascaping Designer (2023) | 62 | 1 |
| The Aquatic Adventure of the Last Human (2016) | 802,456 | 393 |
| The Aquatic Games (1992) | 103,105 | 164 |
| Aquatic Rampage (2021) | 216 | 2 |
| Aquatic Store Simulator (2024) | 408,788 | 420 |
| Aquatico (2023) | 9,784,043 | 1,493 |
| Aquatron (1983) | 995 | 4 |
| Aquaventura (1992) | 16,725 | 13 |
| Aquaventure (1983) | 211,550 | 93 |
| AquaZone: Life Simulator (2006) | 6,273 | 7 |
| Aquia (2008) | 960 | 2 |
| Aquila Bird Flight Simulator (2020) | 27,190 | 27 |
| Aquillanto (2022) | 6,020 | 4 |
| Aquilon's Sex Quest (2025) | 425 | 2 |
| AR Games (2011) | 8,154,483 | 303 |
| Ar Nosurge (2014) | 706,839 | 1,085 |
| Ar Nosurge: Ode to an Unborn Star (2014) | 1,359,412 | 1,276 |
| Ar Tonelico 2 (2007) | 928,273 | 1,545 |
| Ar Tonelico II: Melody of Metafalica (2007) | 4,635,027 | 2,459 |
| Ar Tonelico Qoga (2010) | 6,517,982 | 2,675 |
| Ar Tonelico: Melody of Elemia (2006) | 2,555,091 | 3,854 |
| Ar'Kritz the Intruder (1996) | 6,833 | 4 |
| AR-K (2014) | 9,800,276 | 2,489 |
| Ara Fell (2016) | 460,570 | 1,834 |
| Ara: History Untold (2024) | 5,774,877 | 2,054 |
| Arabian (1983) | 266,721 | 192 |
| Arabian Fight (1992) | 809,302 | 376 |
| Arabian Magic (1992) | 510,229 | 296 |
| Arabian Nights (1993) | 8,610,541 | 133 |
| Arabian Nights (2001) | 654,521 | 27 |
| Arabians Lost: The Engagement on Desert (2006) | 6,737 | 25 |
| Arachnophobia (1991) | 4,754,517 | 413 |
| Aragami (2016) | 32,222,864 | 14,725 |
| Aragami 2 (2021) | 15,742,019 | 15,660 |
| Araha : Curse of Yieun Island (2020) | 3,161,756 | 283 |
| ARAIGNEES (2021) | 322,037 | 19 |
| Arashi: Castles of Sin (2021) | 756,956 | 414 |
| Arata Haunted Asylum (2022) | 9 | 1 |
| Araya (2016) | 141,614,811 | 6,403 |
| Arbalester (1989) | 42,829 | 79 |
| Arbeit Man in another world (2021) | 0 | 0 |
| Arboreal (2021) | 77,738 | 26 |
| Arboria (2020) | 1,297,890 | 641 |
| Arc Arena: Monster Tournament (1997) | 0 | 0 |
| Arc of Alchemist (2019) | 631,041 | 479 |
| The Arc of Yesod (1985) | 10,948 | 18 |
| Arc Rise Fantasia (2009) | 3,377,049 | 3,766 |
| ARC SAVIOR (2019) | 20,430 | 44 |
