| Wario's Adventure | RetroDeath | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 1.4 | 04 Apr 2015 |
| Warioland 2 | pacnsacdave | Kirby's Adventure | Action > Platformer | NES | G, T, GP | Complete | 1.0 | 27 Jun 2015 |
| Wario’s Woods Enhancer | PKMNwww411 | Wario's Woods | Puzzle | NES | G | Improvement | 1.0 | 31 Aug 2007 |
| Wario’s Woods Great Autumn Yesterday | L.Soft Hacks | Wario's Woods | Puzzle | NES | G, L | Complete | 1.0 | 03 Aug 2007 |
| Warp Animation Enabling Patch | Dragonsbrethren | Final Fantasy II | Role Playing | SNES | GP | Improvement | 1.0 | 23 Jun 2007 |
| Warsaw City | Berion | Battle City | Action | NES | G, L, T | Complete | 4.5 fixed | 25 Aug 2008 |
| Warsong Graphics Hack | M.I.J.E.T. | Warsong | Strategy > Turn Based | GEN | G | Improvement | 1.0 | 01 May 2008 |
| Watatsuki no Yorihime in Streets of Rage 2 | Mystery Hacks | Streets of Rage 2 | Action > Beat 'Em Up | GEN | G, S, T | Improvement | 1.0 | 04 Nov 2017 |
| Water Mario | Eden GT | Super Mario Bros. | Action > Platformer | NES | S, L, GP | Complete | 0.9β | 02 Jul 2015 |
| Watts in the Haunted Forest | Kethinov | Secret of Mana | Role Playing > Action RPG | SNES | GP | Improvement | 1.2 | 24 Oct 2019 |
| Wave beam hack for MegaMan 2 | Lord J | Mega Man 2 | Action > Platformer | NES | G, GP | Improvement | 0.9 | 01 Aug 2005 |
| Wave beam hack for MegaMan 3 | Lord J | Mega Man 3 | Action > Platformer | NES | G, GP | Improvement | 1.0 | 12 Oct 2008 |
| WCW Master's Original Portrait & Head | SCD | WCW World Championship Wrestling | Sports | NES | G | Improvement | Final | 29 May 2018 |
| Weird Mario Bros (Graphics) | Renhoek | Super Mario Bros. | Action > Platformer | NES | G | Improvement | 1.0 | 10 Apr 2017 |
| Welcome to My Nightmare - Starring Alice Cooper | Megafield64 | The Bugs Bunny Crazy Castle | Action > Platformer | NES | G, L | Complete | 1.0 | 23 Nov 2017 |
| Wendy 2: Lost Krion/Magical Wendy | Korxtendo | The Krion Conquest | Action > Platformer | NES | G, T, O | Improvement | 1.1.3 | 31 Oct 2018 |
| Wendy: Every Witch Way - Force GBA Enhanced Mode | celebi23 | Wendy: Every Witch Way | Action > Platformer | GB | G | Improvement | 1.0 | 14 Jun 2018 |
| Wet Dream - TROM's Edition | TROM | Super Metroid | Action Adventure | SNES | G, L, GP | Complete | 1.0 | 14 Jan 2014 |
| Wet Dream Extended | Lunaria | Super Metroid | Action Adventure | SNES | L, GP | Complete | 1.0 | 31 Jul 2009 |
| Wet Winter | Lunaria | Super Metroid | Action Adventure | SNES | G, L | Complete | 0.9 | 25 Dec 2009 |
