| Umurangi Generation (2020) | 1,040,193 | 634 |
| Un Juego de Huevos (2010) | 26,083 | 8 |
| Un pas fragile (2019) | 253,927 | 50 |
| The Un-BEATable Game (2023) | 7,067,683 | 31 |
| Unalive (2017) | 214,981 | 94 |
| Unarmed Area (2021) | 0 | 0 |
| Unavailed (2023) | 4,938 | 17 |
| Unavowed (2018) | 1,066,285 | 1,861 |
| Unaware (2023) | 840,896 | 123 |
| Unaware in The City (2024) | 1,350 | 2 |
| Unbeatable (2021) | 35,027,526 | 2,419 |
| Unblock Me (2009) | 102,574 | 320 |
| Unblock Me Car (2021) | 1,695 | 451 |
| Unblocking (2022) | 66,479 | 26 |
| Unbound Saga (2009) | 195,179 | 144 |
| Unbound: Worlds Apart (2021) | 1,437,068 | 2,233 |
| Unbox (2016) | 40,498,611 | 1,644 |
| Unbox: Newbie's Adventure (2016) | 2,347,805 | 545 |
| The Unbreakable Gumball (2022) | 38,112 | 6 |
| Unbuild (2021) | 2,307 | 13 |
| Uncanny Valley (2015) | 4,349,200 | 706 |
| Uncanny Valley (2017) | 8,708,102 | 318 |
| The Uncanny X-Men (1989) | 8,009,904 | 3,044 |
| The Uncertain: Last Quiet Day (2016) | 1,049,592 | 1,295 |
| The Uncertain: Light At The End (2020) | 1,169,614 | 1,716 |
| Unchained Blades (2011) | 674,637 | 229 |
| Uncharted 2: Among Thieves (2009) | 334,156,446 | 164,916 |
| Uncharted 3: Drake's Deception (2011) | 552,225,509 | 172,198 |
| Uncharted 4: A Thief's End (2016) | 2,257,259,546 | 689,934 |
| Uncharted Lands: Beginning (2023) | 0 | 0 |
| Uncharted Ocean (2019) | 52,954 | 99 |
| Uncharted Space - project 3062 (2022) | 0 | 0 |
| Uncharted Tides: Port Royal (2019) | 485,700 | 328 |
| Uncharted Waters (1990) | 894,891 | 448 |
| Uncharted Waters (1991) | 320,547 | 223 |
| Uncharted Waters 2: New Horizons (1993) | 186,765 | 127 |
| Uncharted Waters II: New Horizons (1993) | 3,609,499 | 1,040 |
| Uncharted Waters Online (2004) | 4,014,528 | 3,080 |
| Uncharted Waters Online (2010) | 1,339,618 | 126 |
| Uncharted Waters Origin (2023) | 594,911 | 836 |
| Uncharted Waters VI (2019) | 262,683 | 111 |
| Uncharted Waters: New Horizons (1994) | 911,733 | 605 |
| Uncharted: Drake's Fortune (2007) | 208,927,296 | 124,081 |
| Uncharted: Fight for Fortune (2012) | 365,661 | 108 |
| Uncharted: Fortune Hunter (2016) | 1,263,901 | 564 |
| Uncharted: Golden Abyss (2011) | 35,873,049 | 4,113 |
| Uncharted: The Lost Legacy (2017) | 357,846,672 | 133,471 |
| Unclaimed World (2016) | 123,413 | 85 |
| Uncle Chop's Rocket Shop (2024) | 1,221,661 | 733 |
| Uncle Henry's Playhouse (1996) | 954 | 3 |
| Uncle Kenny The Game (2023) | 222 | 4 |
| Uncle Nook's Survivors (2025) | 73 | 4 |
| Uncle Unco (2024) | 1 | 1 |
| Uncle's Basement (2024) | 494,162 | 76 |
| The Unclogging: An Unsanitary Saga (2017) | 0 | 0 |
| Uncolored Bob II (2021) | 121 | 4 |
| Unconnected Marketeers (2021) | 8,935,502 | 2,550 |
| Unconventional Warfare (2022) | 222,174 | 71 |
| Uncover the Smoking Gun (2024) | 617,020 | 90 |
| Uncraft World (2015) | 3,377,644 | 119 |
| Uncrowded (2015) | 497,054 | 17 |
| UNCULT (2024) | 1,526 | 3 |
| UNCURSED (2025) | 130,432 | 123 |
| Undarkened: Revival (2022) | 0 | 0 |
| Undaunted Normandy (2023) | 118,289 | 84 |
| Undawn (2023) | 4,159,825 | 2,108 |
| Undead Battle Royale (2021) | 20,270 | 24 |
| Undead Bowling (2013) | 26,062 | 17 |
| Undead Citadel (2023) | 1,306,610 | 765 |
| Undead City (2024) | 339,646 | 223 |
| Undead Darlings ~no cure for love (2020) | 28,553 | 69 |
| Undead Development (2021) | 279,109 | 1 |
| Undead Horde (2019) | 5,193,943 | 1,823 |
| Undead Inc. (2024) | 1,036,000 | 120 |
| Undead Kingdom Survivors (2025) | 44 | 2 |
