| Ufouria: The Saga (1991) | 884,063 | 855 |
| Ugaris - The legend Recovered (2014) | 331 | 3 |
| Ugh! (1992) | 88,690,726 | 1,403 |
| The Ugly Ducling (2022) | 0 | 0 |
| The Ugly Prince Duckling (2007) | 5,656 | 20 |
| UglyDolls: An Imperfect Adventure (2019) | 379,974 | 102 |
| Ugougo Trinity (2009) | 0 | 0 |
| UK Truck Simulator (2010) | 2,819,042 | 329 |
| Ukhar (2018) | 1,310 | 6 |
| UKNON Jones & Guynelk - Awesome! (2023) | 86 | 1 |
| UKNON Jones & Guynelk 2 (2025) | 0 | 0 |
| Ukraine War Stories (2022) | 35,137 | 111 |
| Ulama: Arena of the Gods (2017) | 334 | 7 |
| Ulia Chronicles (2024) | 417 | 2 |
| Uligo: A Slime's Hike (2022) | 358 | 9 |
| Ulises (1989) | 68,356 | 57 |
| Ultima Adventum (2021) | 42 | 1 |
| Ultima Forever: Quest for the Avatar (2013) | 675,226 | 85 |
| Ultima I: The First Age of Darkness (1981) | 6,209,908 | 1,111 |
| Ultima II: The Revenge of the Enchantress (1982) | 2,548,903 | 551 |
| Ultima III: Exodus (1983) | 2,499,463 | 1,428 |
| Ultima IV: Quest of the Avatar (1985) | 3,140,306 | 2,535 |
| Ultima IX: Ascension (1999) | 4,361,565 | 2,279 |
| Ultima Online (1997) | 25,479,902 | 23,317 |
| Ultima Ratio Regum (2012) | 45,134 | 14 |
| Ultima Underworld II: Labyrinth of Worlds (1993) | 1,743,471 | 1,236 |
| Ultima Underworld: The Stygian Abyss (1992) | 5,034,086 | 2,141 |
| Ultima V: Warriors of Destiny (1988) | 1,761,466 | 1,577 |
| Ultima VI: The False Prophet (1990) | 2,786,041 | 1,864 |
| Ultima VII Part Two: Serpent Isle (1993) | 272,985 | 619 |
| Ultima VII: The Black Gate (1992) | 7,830,050 | 2,868 |
| Ultima VIII: Pagan (1994) | 2,338,366 | 1,183 |
| Ultima: Escape from Mt. Drash (1983) | 48,794 | 35 |
| Ultima: Runes of Virtue (1992) | 936,851 | 65 |
| Ultima: Runes of Virtue II (1993) | 65,272 | 114 |
| Ultima: Worlds of Adventure 2: Martian Dreams (1991) | 87,438 | 124 |
| The Ultimate 11: SNK Football Championship (1996) | 453,497 | 205 |
| Ultimate 8 Ball (1999) | 68,078 | 82 |
| Ultimate Admiral: Age of Sail (2021) | 3,797,119 | 1,803 |
| Ultimate Admiral: Dreadnoughts (2021) | 40,539,942 | 11,248 |
| Ultimate ADOM - Caverns of Chaos (2021) | 575,407 | 327 |
| Ultimate Air Combat (1992) | 80,060 | 110 |
| Ultimate Angler (2015) | 1,115,975 | 322 |
| Ultimate Anime Jigsaw Puzzle (2023) | 2,280 | 14 |
| Ultimate Arena (2016) | 3,221,035 | 435 |
| Ultimate Band (2008) | 262,380 | 207 |
| Ultimate Baseball Online (2003) | 11,252 | 6 |
| Ultimate Basketball (1990) | 2,156,238 | 331 |
| The Ultimate Battle of the Sexes (2010) | 1,605 | 3 |
| Ultimate Battle Zombies (2012) | 16,218 | 1 |
| Ultimate Beach Soccer (2003) | 1,653,622 | 80 |
| Ultimate Block Party (2004) | 30,106 | 35 |
| Ultimate Board Game Collection (2006) | 41,652 | 61 |
| Ultimate Body Blows (1994) | 57,204 | 50 |
| Ultimate Brain Games (2003) | 145,406 | 64 |
| Ultimate Card Games (2004) | 11,795 | 30 |
| Ultimate Chicken Horse (2016) | 1,173,066,295 | 31,279 |
| Ultimate Chump (2024) | 3 | 1 |
| Ultimate Civil War Battles: Robert E. Lee vs. Ulysses S. Grant (2003) | 260,693 | 4 |
| Ultimate Combat Mission (1987) | 2,632 | 13 |
| Ultimate Custom Night (2018) | 2,125,576,325 | 60,687 |
| Ultimate Danger Bundle (2018) | 40,601 | 3 |
| Ultimate Destruction Simulator (2023) | 82,972 | 19 |
| Ultimate Dinos World (2020) | 0 | 0 |
| Ultimate Domain (1993) | 68,352 | 49 |
| Ultimate Duck Hunting (2006) | 361,412 | 21 |
| Ultimate Epic Battle Simulator (2017) | 1,348,410,633 | 20,242 |
| Ultimate Epic Battle Simulator 2 (2023) | 343,561,767 | 59,073 |
| Ultimate Fight Survival (2021) | 3,734,560 | 2,416 |
| Ultimate Fighter (1992) | 4,082,593 | 489 |
| Ultimate Fighting Championship (2000) | 2,877,089 | 602 |
| Ultimate Fishing Simulator (2018) | 21,352,154 | 4,596 |
| Ultimate Fishing Simulator 2 (2021) | 3,070,500 | 1,469 |
| Ultimate Fishing Simulator VR (2019) | 107,458 | 8 |
| The Ultimate Gate (2025) | 276 | 6 |
