| Map | Title | Author | Players | |
|---|---|---|---|---|
| bar-9 | BarX | STD | Unknown | |
| Barrier | Barrier | Viliam Simko | 2-6 | |
| battle_at_nyleves_falls | Battle at Nyleve's Falls | Juan Pancho Eekels & makemeunreal | Unknown | |
| BBGWT | BBG's Weathertop | BBG-(DOG)- | Unknown | |
| bestcoopmapever2999 | bestcoopmapever2999 | dustinechoes849 | Unknown | |
| BloodMatch | "A Blood Match" | Magna-Man | Unknown | |
| BlueAtrium | BlueAtrium | Terraniux, the Dutch mapper. Modded By Rubie For CoopGame | 4 | |
| BlueLanesBT | BlueLanesBT | B. TEXIER | Unknown | |
| BlueLanesBT225 | BlueLanesBT | B. TEXIER | Unknown | |
| BoringGrounds | codename: ETERNITY (3:00 AM) | indigo broker [p 2 T o] | Unknown | |
| Bridge | Bridge | Anounymous | 1-6 |