Custom Maps
| Map | Name | Difficulty | Time |
|---|---|---|---|
| (Co-op) l4d_deathaboard01_prison | Nineball | Normal | 8.21 minutes |
| (Co-op) l4d_deathaboard02_yard | Nineball | Normal | 7.94 minutes |
| (Co-op) l4d_deathaboard03_docks | Nineball | Normal | 7.26 minutes |
| (Co-op) l4d_deathaboard04_ship | Nineball | Normal | 6.55 minutes |
| (Co-op) l4d_deathaboard05_light | Nineball | Normal | 9.33 minutes |