| Umineko no Naku Koro ni: Majo to Suiri no Rondo (2010) | 277,916 | 186 |
| Umineko When They Cry - Answer Arcs (2017) | 437,745 | 947 |
| Umineko When They Cry - Question Arcs (2016) | 479,019 | 904 |
| Umineko: Golden Fantasia (2010) | 2,814,339 | 2,029 |
| Umineko: When They Cry (2007) | 5,911,256 | 4,810 |
| Umineko: When They Cry -- Breakdown -- Episode 6: Dawn of the Golden Witch (2009) | 1,150,669 | 291 |
| Umiro (2018) | 0 | 0 |
| Umisho (2007) | 11,282 | 11 |
| Umm Oyoun - ام عيون (2025) | 345 | 4 |
| Umpire Simulator (2018) | 359 | 1 |
| UMS II: Nations at War (1990) | 1,068 | 6 |
| Umurangi Generation (2020) | 1,040,341 | 636 |
| Un Juego de Huevos (2010) | 26,083 | 8 |
| Un pas fragile (2019) | 253,927 | 50 |
| The Un-BEATable Game (2023) | 7,067,780 | 32 |
| Unalive (2017) | 214,984 | 94 |
| Unarmed Area (2021) | 0 | 0 |
| Unavailed (2023) | 4,938 | 17 |
| Unavowed (2018) | 1,066,333 | 1,862 |
| Unaware (2023) | 849,719 | 126 |
| Unaware in The City (2024) | 1,350 | 2 |
| Unbeatable (2021) | 37,528,420 | 2,562 |
| Unblock Me (2009) | 103,642 | 322 |
| Unblock Me Car (2021) | 1,695 | 451 |
| Unblocking (2022) | 66,495 | 26 |
| Unbound Drift (2026) | 0 | 0 |
| Unbound Saga (2009) | 195,179 | 144 |
| Unbound Souls (2025) | 0 | 0 |
| Unbound: Worlds Apart (2021) | 1,437,320 | 2,247 |
| Unbox (2016) | 40,512,365 | 1,658 |
| Unbox: Newbie's Adventure (2016) | 2,348,139 | 548 |
| The Unbreakable Gumball (2022) | 38,112 | 6 |
| Unbuild (2021) | 2,307 | 13 |
| Uncanny Tales: 1992 (2025) | 60 | 5 |
| Uncanny Valley (2015) | 4,354,456 | 711 |
| Uncanny Valley (2017) | 8,708,195 | 318 |
| The Uncanny X-Men (1989) | 14,651,707 | 3,138 |
| The Uncertain: Last Quiet Day (2016) | 1,049,798 | 1,304 |
| The Uncertain: Light At The End (2020) | 1,187,154 | 1,760 |
| Unchained Blades (2011) | 674,698 | 231 |
| Uncharted 2: Among Thieves (2009) | 334,718,918 | 167,011 |
| Uncharted 3: Drake's Deception (2011) | 552,937,082 | 174,282 |
| Uncharted 4: A Thief's End (2016) | 2,268,949,758 | 698,863 |
| Uncharted Lands: Beginning (2023) | 0 | 0 |
| Uncharted Ocean (2019) | 52,954 | 99 |
| Uncharted Space - project 3062 (2022) | 0 | 0 |
| Uncharted Tides: Port Royal (2019) | 487,736 | 345 |
| Uncharted Waters (1990) | 895,008 | 448 |
| Uncharted Waters (1991) | 320,826 | 224 |
| Uncharted Waters 2: New Horizons (1993) | 188,429 | 136 |
| Uncharted Waters II: New Horizons (1993) | 3,942,273 | 1,062 |
| Uncharted Waters Online (2004) | 4,015,673 | 3,078 |
| Uncharted Waters Online (2010) | 1,353,697 | 127 |
| Uncharted Waters Origin (2023) | 595,336 | 837 |
| Uncharted Waters VI (2019) | 262,683 | 111 |
| Uncharted Waters: New Horizons (1994) | 917,285 | 647 |
| Uncharted: Drake's Fortune (2007) | 209,180,949 | 124,457 |
| Uncharted: Fight for Fortune (2012) | 365,737 | 108 |
| Uncharted: Fortune Hunter (2016) | 1,263,911 | 564 |
| Uncharted: Golden Abyss (2011) | 35,916,303 | 4,126 |
| Uncharted: The Lost Legacy (2017) | 358,749,906 | 135,404 |
| Unclaimed World (2016) | 123,414 | 85 |
| Uncle Chop's Rocket Shop (2024) | 1,222,471 | 757 |
| 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) | 494,187 | 77 |
| The Unclogging: An Unsanitary Saga (2017) | 0 | 0 |
| Uncolored Bob II (2021) | 121 | 4 |
| Unconnected Marketeers (2021) | 9,059,518 | 2,616 |
| Unconventional Warfare (2022) | 228,036 | 71 |
| Uncover the Smoking Gun (2024) | 617,030 | 90 |
| Uncraft World (2015) | 3,377,644 | 119 |
| Uncrowded (2015) | 497,054 | 17 |
