Isoball X1 is a level pack for the isometric puzzle game, Isoball, featuring 36 levels. The goal in each level is to roll the marble into the hole with the puzzle pieces in your inventory. Levels start off easy, but become more complex as new pieces are introduced. Pieces include blocks, ramps, bridges, elevators and triggers. Refer to the tutorial section of the game for an explanation of what each piece does.