| Unofficial add-ons | Add-ons that are not supported by the original developer/publisher.
These might ... | 179 |
| Unnecessary Roughness series | | 3 |
| Universe series | Omnitrend's series of science fiction games. | 3 |
| Undercover series | | 2 |
| Uncharted Waters / Daikōkai Jidai series | The Uncharted Waters or DaikÅkai Jidai (Great Age of Exploration)
series are ... | 2 |
| Uncharted series | Action-adventure series following the story of Nathan Drake in his
adventures ... | 12 |
| UMS series | Intergalactic Development Incorporated's series of universal military
... | 5 |
| Umihara Kawase series | | 3 |
| Ultraman games | Games centering around the escapades of Ultraman, a Japanese
superhero. | 8 |
| UltraBox series | Containing six volumes, UltraBox for the PC Engine (TurboGrafx)
console was ... | 6 |
| Ultima universe | Contains the main (numbered) Ultima Series, spin-offs such as
Ultima ... | 44 |
| Ultima Underworld series | Ultima Underworld games are spin-offs of the main Ultima series, and
are part ... | 3 |
| Ultimate Soccer Manager series | Impressions Games series of football managing games. The series are
known for ... | 5 |
| Ultima series | Ultima series contains all main (numbered) Ultima RPGs. They are set
mainly in ... | 25 |
| Ultima: Runes of Virtue series | Action/adventure spin-off from the Ultima Series. | 2 |
| Ultima Online series | Various expansions, add-ons, re-releases and compilations of the
Ultima Online ... | 13 |
| UFO series | The UFO series of tactical strategy games released by Cenega
Publishing. | 5 |
| UFC Undisputed series | | 2 |
| UFC licensees | Games carrying the license of the mixed-martial arts UFC (Ultimate
Fighting ... | 7 |
| UEFA-sanctioned games | Games licensed by the European soccer governing body. Along regular
naming ... | 19 |
| Ubi Key games | Any Game Boy game that supported the Ubi Key system. An Ubi Key is an
item to ... | 8 |
| ÜberSoldier series | | 3 |
| TY the Tasmanian Tiger series | Games featuring TY, the Tasmanian Tiger. | 3 |
| Tyrian series | | 2 |
| Tynesoft Challenge / Olympiad series | Olympic games released by Thunder Mountain in the US and Tynesoft
elsewhere | 3 |
Game Group