| Ultima IV: Quest of the Avatar | Dr Lancer-X ◪ | 2010-08-07 | No reviews. | 337 |
| Ultra Red 2: Red's Planet | gokachu ◪ | 2000-05-04 |
| 78 |
| Ultra Red: Catching Red (ver. 1.1) | gokachu ◪ | 2003-12-27 |
| 112 |
| Unbalanced (Unfinished) | KKairos ◪ | 2001-01-00 |
| 87 |
| Undead | zombieguy ◪ | | No reviews. | 88 |
| Unforeseen Dilemma, An | Bramble ◪ | 2005-03-13 |
| 86 |
| Unique Slideshow #1 | Rawhide C ◪ | |
| 85 |
| Unique Slideshow #2 | Rawhide C ◪ | |
| 94 |
| Univers v2 | KMSpill | 2000-03-07 |
| 93 |
| Unknown | LogiCow ◪ | 2002-08-12 |
| 96 |
| Unknown Game No.2 | djtiesto ◪ | 2000-01-30 |
| 107 |
| Unnamed Game | gofer-chan ◪ | 2002-06-16 |
| 88 |
| Unnamed Sidescrolling RPG Demo | Galladin ◪ | 2002-06-25 | No reviews. | 86 |
| Up the Hole | flucknugget ◪ | |
| 112 |
| USUK | suxiT ◪ | |
| 91 |
