| Bus Ride | zxx ◪ | 2020-04-02 |
| 97 |
| Burnt Rubber | Mark Wilson | |
| 91 |
| Bungle in the Jungle dump | Galladin ◪ | 2016-04-06 |
| 91 |
| Bumper Stickers (ver. 2.0) | Kewlio ◪ | 2009-03-17 |
| 219 |
| Bucketfoot 3D | SkeptySoft | |
| 87 |
| Brotherhood | Hercules ◪ | |
| 256 |
| Breakout! (bug fix) | Why-Fi ◪ | 2011-01-19 |
| 80 |
| Breakout! | Why-Fi ◪ | 2007-11-24 |
| 68 |
| Bramblekid's Stack of MZX Games | Bramble ◪ | 2005-06-01 | No reviews. | 89 |
| BOX.MZX | ascii ◪ | |
| 93 |
| Bounty Hunter Quest 1 Demo 1 | JangoFett ◪ | |
| 78 |
| Boring Game, A | Nomad | 2000-07-14 |
| 101 |
| Booshkies Demo (Original) (ver. 2) | Duhreetoh ◪ | 1998-02-16 |
| 229 |
| Booshkies Demo (Reboot) | Duhreetoh ◪ | 1999-05-06 |
| 201 |
| Boom. | Diamond ◪ | |
| 90 |
| Bonesteel | CJA ◪ | 2018-04-17 |
| 281 |
| Bombin' Dude (ver. 3.70) | CJA ◪ | 2009-10-04 |
| 336 |
| Bomberman! | Nanobot ◪ | | No reviews. | 102 |
| Bomb Threat | Crus ◪ | 1997-02-20 |
| 102 |
| Bomb Brothers | Otto Germain ◪ | 1996-09-08 |
| 312 |
| Boing! | RoSS ◪ | 2003-01-29 |
| 95 |
| Boggley | Leper_Mess ◪ | |
| 84 |
| Bocco Chronicles Chapter 2 Demo (ver. 0.2) | Bocco ◪ | 2000-08-23 | No reviews. | 97 |
| Bocco Chronicles Chapter 1: The Reign of Kraknod (ver. 1.8) | Bocco ◪ | 2001-06-18 | No reviews. | 156 |
| Bob's Adventure | Christopher Cullen | |
| 94 |
| BOB IS SALSA | Goshi ◪ | 2007-01-16 |
| 97 |
| Bob Demo | Jonathan Charlton | |
| 88 |
| Blue Buckaroo Enhanced Slightly | TotalKafka | 1997-01-01 |
| 125 |
| Blue Buckaroo 3: The Return | ???? | 2000-09-24 |
| 102 |
| Blue Buckaroo 1 & 2 | Bob Keller Kielbasis | 1996-06-30 |
| 181 |
| Bloodlands (ver. 3.31a) | Maxim ◪ | 2012-03-24 |
| 565 |
| Bloodgate Demo | Tom Ivey | 1996-09-06 |
| 104 |
| Blood Drinker Preview | DarkRaichu | 2000-08-17 |
| 91 |
| Blocks | BiGBuBBa ◪ | 2001-04-23 |
| 200 |
| Block Wars | KKairos ◪ | 2004-01-09 |
| 260 |
| Blob's Adventure Demo | chubbbyuk ◪ | 2001-11-12 |
| 84 |
| BLARGFRDRGMAHAG! | Kuddy ◪ | 2003-02-05 |
| 244 |
| Blade of Kazul (ver. 2.0) | Nanobot ◪ | 2003-04-06 | No reviews. | 145 |
| Billybob | Nanobot ◪ | |
| 106 |
| Billy's RPG | Billy of America | 1998-06-00 |
| 103 |
| Billy's Quest | BiGBuBBa ◪ | |
| 112 |
| Big Tree, The | commodorejohn ◪ | | No reviews. | 93 |
| Beyond Reality: The Future Project | SpellWeavre ◪ | 1997-03-25 |
| 112 |
| Better Than Nothing | ThDPro ◪ | 2014-06-13 | No reviews. | 114 |
| Bernard the Bard | Otto Germain ◪ | 1998-09-02 |
| 1579 |
| Behind Blue Eyes: Impactor (Demo) | Selan p ◪ | | No reviews. | 86 |
| Begie Game: Begie's Glorious Adventure (Incomplete) (ver. Project Dump) | ShloobeR ◪ | 2011-01-30 | No reviews. | 151 |
| Beat: A Froggy Game (Project Dump) | Duhreetoh ◪ | 1998-06-12 |
| 111 |
| Bears 2 Demo | Sliver | 2000-07-28 | No reviews. | 96 |
| Bears | Sliver | 2000-03-04 |
| 103 |
