| Belmont's Revenge: Speed Hack | Sliver X | Castlevania II: Belmont’s Revenge | Action > Platformer | GB | GP | Improvement | 1.1 | 08 Feb 2007 |
| beth | JonnyManjiro | Metroid | Action Adventure | NES | L, GP | Complete | 1.0 | 02 Mar 2021 |
| Better Colors | N.Dpendent | Mario Kart: Super Circuit | Racing | GBA | G | Improvement | 1.1 | 13 Jan 2020 |
| Better Default Text Boxes | Kethinov | Secret of Mana | Role Playing > Action RPG | SNES | G, T | Improvement | 1.0 | 07 Jan 2019 |
| Better Dice | Leet Sketcher | Final Fantasy III | Role Playing | SNES | GP | Improvement | 1.3 | 23 Apr 2016 |
| Better SM64 Non-Stop | MetalAbaj | Super Mario 64 | Action > Platformer | N64 | GP | Improvement | 1.0 | 26 Sep 2020 |
| Beyond Oasis Font Refresh | LastduaL | Beyond Oasis | Adventure | GEN | G | Improvement | 1.0 | 08 Mar 2021 |
| Beyond Zero Tolerance - Zero Tolerance Levels 1.1 | Priboi | Beyond Zero Tolerance | Action > Shooter | GEN | L | Complete | 1.1 | 15 May 2011 |
| Bib's Adventure 2 - Bib on Mars | Moltov | Super Mario World | Action > Platformer | SNES | G, L, T, GP | Complete | Final | 01 Jan 2010 |
| Bible Adventures (7.0 Update) | Immutable | Bible Adventures | Adventure | NES | G, T, GP | Improvement | 7.0 | 25 Jun 2018 |
| Bicycle Race | Inventor | F-1 Race | Racing | NES | G, S, GP | Complete | 1.0 | 01 Jan 2001 |
| Biff Gunman | Oswego | Wild Gunman | Action > Shooter | NES | G | Complete | 1.0 | 17 Oct 2021 |
| Big Apple 3AM (Turtles in Time) | bgvanbur | Teenage Mutant Ninja Turtles: The Hyperstone Heist | Action > Beat 'Em Up | GEN | L | Improvement | 0.01 | 19 Aug 2016 |
| Big Boo's Revenge | Tobias94 | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 1.0 | 09 Jun 2013 |
| Big Trouble in Little China | pacnsacdave | Bad Dudes | Action > Beat 'Em Up | NES | G, T | Improvement | 1.1 | 08 Oct 2017 |
| Big Trouble in Little China DX | Crying Onion | Bad Dudes | Action > Beat 'Em Up | NES | G | Addendum | 1.0 | 29 Mar 2019 |
| Big's Fishing Derby | flamewing | Sonic the Hedgehog 2 | Action > Platformer | GEN | G, S, L, T, GP, O | Complete | 1.05.021a | 30 Apr 2016 |
| Bigger Picture | torridgristle | New Ghostbusters II | Action | NES | G | Improvement | 1.0 | 27 Aug 2018 |
| Bill Mario COOL ADVENTURE | SpicyMarshmallow | Super Mario Bros. | Action > Platformer | NES | G, L, T | Complete | 1.0 | 27 Nov 2018 |
| Billy Time! | BillyTime! Games | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 14.0 | 18 May 2020 |
