Mining robots Rockford and Crystal return for more diamond-hunting action in this adaptation of the 1984 classic for 3DS. More than 150 new caves are available to explore, each featuring monsters to battle and gems to collect. Multiple game types offer a new spin on the gameplay, from puzzle-type stages to time-sensitive challenges. For purists, a retro mode is included with the original enemies, game elements, and 8-bit soundtrack. All characters and caves in this retro mode are now rendered in 3D, however, offering a new way to experience the traditional action.