| Zanac Famicom Music Restoration | 8-bit fan | Zanac | Action > Shooter | NES | S | Improvement | Final | 29 Dec 2017 |
| Zanac MMC5 Patch | Dracula X | Zanac | Action > Shooter | NES | O | Improvement | 1.0a | 27 May 2020 |
| Yuu Yuu Hakusho - Need not DATACH | wangsitan | Yuu Yuu Hakusho: Bakutou Ankoku Bujutsu Kai | Action > Fighting | NES | GP, O | Complete | 1.5 | 12 Feb 2019 |
| Yu-Gi-Oh: The Sacred Cards - Play as Mai Valentine | Rob009 | Yu-Gi-Oh! The Sacred Cards | Card Game | GBA | G | Improvement | 1.0 | 19 Jul 2020 |
| Yu-Gi-Oh - The Sacred Cards: Text Overhaul | Rob009 | Yu-Gi-Oh! The Sacred Cards | Card Game | GBA | T | Improvement | 1.0 | 29 Jul 2020 |
| Yu-Gi-Oh - The Sacred Cards: Alternate (Male) Player Sprite | Rob009 | Yu-Gi-Oh! The Sacred Cards | Card Game | GBA | G | Improvement | 1.0 | 08 Sep 2020 |
| Yu-Gi-Oh!DotR_J_3D_Monsters_n_Cards | injoon84 | Yu-Gi-Oh! The Duelists of The Roses | Strategy > Turn Based | PS2 | G | Improvement | 1.0 | 04 Jul 2020 |
| Reduced Flashing | Mia | Yu Yu Hakusho Final: Makai Saikyou Retsuden | Action > Fighting | SNES | G | Improvement | 1.0 | 07 Dec 2019 |
| Ys US Master System FM sound patch | SSTranslations | Ys: The Vanished Omens | Role Playing | SMS | S, T | Improvement | 1.2 | 14 Aug 2009 |
| Youkai Hana Asobi NEW | gingerbeardman | Youkai Hana Asobi | Card Game | PSX | G | Improvement | 1.0 | 03 Jul 2019 |
| Yoshi's Island Voice Removal | mangaman3000 | Yoshi's Island: Super Mario Advance 3 | Action > Platformer | GBA | S | Improvement | 0.1 | 11 Oct 2015 |
| Yoshi's Island (SMA 3) Colour Restoration | ShadowOne333 | Yoshi's Island: Super Mario Advance 3 | Action > Platformer | GBA | G, O | Improvement | 2.0 | 19 Oct 2015 |
| Yoshi's Island DS Music Hack | xXchainchomp01 | Yoshi's Island DS | Action > Platformer | NDS | S | Improvement | 3 | 02 Feb 2020 |
| Yoshi's Cookie Title Screen Hack | Q | Yoshi's Cookie | Puzzle | SNES | G, O | Improvement | 1.0 | 08 Nov 2018 |
| Mario & Yoshi - MMC1 to MMC3 | infidelity | Yoshi | Puzzle | NES | O | Improvement | 1.0 | 26 Nov 2013 |
| Xiao Ma Li palette fix | Guyver (X.B.M.) | Xiao Ma Li | Other | NES | G | Bug Fix | 1.0 | 17 Oct 2016 |
| Xexyz - SRAM Saving Edition | 8-bit fan | Xexyz | Action > Platformer | NES | T, O | Improvement | 1.0 | 12 Jan 2018 |
| Xevious Alternate | Makimura Manufacturing | Xevious | Action > Shooter | NES | G, O | Improvement | 2.0.1 | 07 Jul 2012 |
| Xenon 2: Megablast Amiga colors | fusaru | Xenon 2: Megablast | Action > Shooter | GEN | G | Improvement | 1.00 | 15 Jul 2016 |
| Xenogears VWF Pack | Gemini | Xenogears | Role Playing | PSX | G, T | Improvement | 1.0 | 20 Sep 2016 |
