Doubles Hard is a game inspired by a legendary production Boulder Dash, created by Peter Liepa and released by First Star Software in 1984. Unlike the original Doubles Hard game, diamonds are collected on a three-dimensional board. The player can move up, down, left, right, in and out. There is also 'grab' move. The use of the three-dimensional board has made it possible to design completely new levels that put the game on an even higher complexity