What is OpenMBU?
OpenMBU is a open-source re-build of Marble Blast Ultra (MBU) from the Xbox360. The goal is to make a experience identical to what people know and love from the Xbox360 on PC. The game features all original 60 SinglePlayer levels and 21 Multiplayer levels including Concentric.
The goal of SinglePlayer is to make it to the end of each level in the fastest time possible while collecting all gems. Multiplayer features up to 8 players trying to get the most points in Gem Hunt.