| UFO: Extraterrestrials (2007) | 546,919 | 745 |
| Ufouria: The Saga (1991) | 885,753 | 861 |
| Ugaris - The legend Recovered (2014) | 331 | 3 |
| Ugh! (1992) | 88,700,448 | 1,415 |
| 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) | 2,819,043 | 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) | 0 | 0 |
| Ulises (1989) | 70,630 | 58 |
| Ultima Adventum (2021) | 42 | 1 |
| Ultima Forever: Quest for the Avatar (2013) | 675,228 | 85 |
| Ultima I: The First Age of Darkness (1981) | 6,234,345 | 1,132 |
| Ultima II: The Revenge of the Enchantress (1982) | 2,568,595 | 557 |
| Ultima III: Exodus (1983) | 2,539,601 | 1,451 |
| Ultima IV: Quest of the Avatar (1985) | 3,192,284 | 2,549 |
| Ultima IX: Ascension (1999) | 4,361,697 | 2,286 |
| Ultima Online (1997) | 26,186,616 | 24,266 |
| Ultima Ratio Regum (2012) | 45,134 | 14 |
| Ultima Underworld II: Labyrinth of Worlds (1993) | 1,997,037 | 1,237 |
| Ultima Underworld: The Stygian Abyss (1992) | 5,192,764 | 2,154 |
| Ultima V: Warriors of Destiny (1988) | 1,811,994 | 1,595 |
| Ultima VI: The False Prophet (1990) | 2,848,890 | 1,920 |
| Ultima VII Part Two: Serpent Isle (1993) | 279,350 | 643 |
| Ultima VII: The Black Gate (1992) | 7,950,667 | 2,875 |
| Ultima VIII: Pagan (1994) | 2,346,370 | 1,192 |
| Ultima: Escape from Mt. Drash (1983) | 48,794 | 35 |
| Ultima: Runes of Virtue (1992) | 1,061,005 | 66 |
| Ultima: Runes of Virtue II (1993) | 65,272 | 114 |
| Ultima: Worlds of Adventure 2: Martian Dreams (1991) | 89,596 | 125 |
| The Ultimate 11: SNK Football Championship (1996) | 454,181 | 209 |
| Ultimate 8 Ball (1999) | 68,140 | 85 |
| Ultimate Admiral: Age of Sail (2021) | 3,798,214 | 1,844 |
| Ultimate Admiral: Dreadnoughts (2021) | 40,633,362 | 11,374 |
| Ultimate ADOM - Caverns of Chaos (2021) | 575,449 | 328 |
| Ultimate Air Combat (1992) | 80,474 | 112 |
| Ultimate Angler (2015) | 1,120,984 | 329 |
| Ultimate Anime Jigsaw Puzzle (2023) | 2,280 | 14 |
| Ultimate Arena (2016) | 3,221,037 | 435 |
| Ultimate Band (2008) | 262,435 | 217 |
| Ultimate Baseball Online (2003) | 11,252 | 6 |
| Ultimate Basketball (1990) | 2,212,350 | 340 |
| The Ultimate Battle of the Sexes (2010) | 1,870 | 23 |
| Ultimate Battle Zombies (2012) | 16,218 | 1 |
| Ultimate Beach Soccer (2003) | 1,655,838 | 83 |
| Ultimate Block Party (2004) | 30,138 | 36 |
| Ultimate Board Game Collection (2006) | 41,691 | 61 |
| Ultimate Body Blows (1994) | 57,263 | 51 |
| Ultimate Brain Games (2003) | 146,614 | 66 |
| Ultimate Card Games (2004) | 11,795 | 30 |
| Ultimate Chicken Horse (2016) | 1,173,840,085 | 31,587 |
| Ultimate Chump (2024) | 3 | 1 |
| Ultimate Civil War Battles: Robert E. Lee vs. Ulysses S. Grant (2003) | 0 | 0 |
| Ultimate Combat Mission (1987) | 2,632 | 13 |
| Ultimate Custom Night (2018) | 2,129,223,076 | 61,286 |
| Ultimate Danger Bundle (2018) | 0 | 0 |
| Ultimate Destruction Simulator (2023) | 82,972 | 19 |
| Ultimate Dinos World (2020) | 0 | 0 |
| Ultimate Domain (1993) | 68,499 | 50 |
| Ultimate Duck Hunting (2006) | 361,637 | 23 |
| Ultimate Epic Battle Simulator (2017) | 1,348,688,011 | 20,409 |
| Ultimate Epic Battle Simulator 2 (2023) | 347,028,239 | 60,302 |
| Ultimate Fight Survival (2021) | 3,734,573 | 2,416 |
| Ultimate Fighter (1992) | 4,110,441 | 496 |
| Ultimate Fighting Championship (2000) | 2,879,631 | 614 |
| Ultimate Fishing Simulator (2018) | 21,405,702 | 4,677 |
| Ultimate Fishing Simulator 2 (2021) | 3,072,784 | 1,487 |
| Ultimate Fishing Simulator VR (2019) | 107,458 | 8 |
