| Ataxx (1990) | 23,379 | 44 |
| Atchmo (2024) | 0 | 0 |
| ATCo2 (2023) | 8 | 1 |
| Atelier Agnes (2021) | 8,222 | 26 |
| Atelier Annie: Alchemists of Sera Island (2009) | 228,805 | 180 |
| Atelier Ayesha: The Alchemist of Dusk (2012) | 3,780,882 | 4,447 |
| Atelier Elie: The Alchemist of Salburg 2 (1998) | 195,816 | 522 |
| Atelier Escha & Logy: Alchemists of the Dusk Sky (2013) | 8,418,562 | 4,733 |
| Atelier Firis: The Alchemist and the Mysterious Journey (2016) | 4,881,982 | 10,235 |
| Atelier Iris 2: The Azoth of Destiny (2005) | 1,467,063 | 1,647 |
| Atelier Iris 3: Grand Phantasm (2006) | 1,574,786 | 1,952 |
| Atelier Iris: Eternal Mana (2004) | 1,530,129 | 2,668 |
| Atelier Judie: The Alchemist of Gramnad (2002) | 145,556 | 255 |
| Atelier Lilie: The Alchemist of Salburg 3 (2001) | 232,130 | 335 |
| Atelier Lulua: The Scion of Arland (2019) | 4,506,654 | 7,499 |
| Atelier Lydie & Suelle: The Alchemists and the Mysterious Paintings (2017) | 5,522,840 | 9,589 |
| Atelier Marie: The Alchemist of Salburg (1997) | 5,709,395 | 3,549 |
| Atelier Meruru: The Apprentice of Arland (2011) | 4,269,305 | 4,622 |
| Atelier Online: Alchemists of the Brasier (2018) | 1,267,955 | 1,046 |
| Atelier Quest Board (2014) | 2,773 | 8 |
| Atelier Rorona: The Alchemist of Arland (2009) | 6,341,243 | 6,254 |
| Atelier Ryza 2: Lost Legends & the Secret Fairy (2020) | 15,137,302 | 21,926 |
| Atelier Ryza 3: Alchemist of the End & the Secret Key (2023) | 11,705,394 | 17,807 |
| Atelier Ryza: Ever Darkness & the Secret Hideout (2019) | 29,187,911 | 29,507 |
| Atelier Shallie: Alchemists of the Dusk Sea (2014) | 7,062,028 | 4,231 |
| Atelier Sophie 2: The Alchemist of the Mysterious Dream (2022) | 5,511,236 | 10,442 |
| Atelier Sophie: The Alchemist of the Mysterious Book (2015) | 8,301,062 | 17,385 |
| Atelier Tia (2020) | 60,099 | 11 |
| Atelier Totori: The Adventurer of Arland (2010) | 4,346,937 | 3,695 |
| Atelier Viorate: The Alchemist of Gramnad 2 (2003) | 199,032 | 294 |
| Atelier Yumia: The Alchemist of Memories & the Envisioned Land (2025) | 10,032,968 | 8,646 |
| ATF (1988) | 407,547 | 70 |
| Atgtha in Absurdia (2020) | 2,371 | 3 |
| Atham Battle Simulator (2023) | 0 | 0 |
| Athanasy (2022) | 1,242,793 | 297 |
| Athena (1986) | 17,624,511 | 1,278 |
| Athena Code (2022) | 3,755 | 16 |
| Athena Crisis (2024) | 62,009 | 58 |
| Athena Trivia (2021) | 0 | 0 |
| Athena: Awakening from the Ordinary Life (1999) | 385,275 | 177 |
| Athenian Rhapsody (2023) | 101,100 | 284 |
| Athens 2004 (2004) | 1,780,078 | 222 |
| Athereon: Advent I (2022) | 0 | 0 |
| Athletic Land (1984) | 1,207,129 | 88 |
| Athletic World (1986) | 176,067 | 97 |
| Athos (2023) | 96,934,774 | 314 |
| Atic Atac (1983) | 1,094,074 | 242 |
| Ativeil (2018) | 2,715 | 12 |
| Atlantic Quest (2014) | 48,232 | 47 |
| Atlantica Online (2008) | 17,110,726 | 11,000 |
| Atlantis (1982) | 109,800,923 | 6,211 |
| Atlantis Academy (2023) | 14,027 | 10 |
| Atlantis Evolution (2004) | 119,163 | 111 |
| Atlantis II (1999) | 288,638 | 203 |
| Atlantis III: The New World (2001) | 322,419 | 166 |
| Atlantis no Nazo (1986) | 2,848,569 | 657 |
| Atlantis Sky Patrol (2006) | 251,505 | 180 |
| Atlantis The Lost Empire: Search for the Journal (2001) | 181 | 5 |
| Atlantis The Lost Empire: Trial by Fire (2001) | 727 | 2 |
| Atlantis: The Lost Tales (1997) | 756,557 | 430 |
| The Atlas (1991) | 71,282,387 | 9,205 |
| ATLAS (2018) | 36,571,170 | 12,715 |
| Atlas Ablaze (2024) | 169 | 1 |
| Atlas Fallen (2023) | 37,052,524 | 20,941 |
| The Atlas Mystery: A VR Puzzle Game (2022) | 91,172 | 71 |
| Atlas Negro: Infernum (2023) | 4,819 | 27 |
| Atlas Reactor (2016) | 3,461,486 | 2,533 |
| Atlas Rogues (2020) | 90,839 | 39 |
| Atlas Wept (2023) | 4,618 | 31 |
| The Atlas: Renaissance Voyager (1995) | 13,351 | 15 |
| Atman:Rebel Flame (2024) | 15,523 | 14 |
| AtmaSphere (2018) | 22,403 | 99 |
| AtmaSphere 2 (2024) | 17,682 | 77 |
| Atmocity (2019) | 93,787 | 26 |
| Atmoids (1990) | 0 | 0 |
