Christmas RotoBlox is a collection of different Tetris-clone games. It includes Classic Tetris, Advanced Tetris (same as Classic but includes special blox), Pentix, Advanced Pentix, Kid and Advanced Kid (really easy). It have two types of game skill - Easy and Normal.As in the original game, the goal is to use different falling shapes to create complete horizontal lines without any gaps, which causes that line to be removed, or cleared. The more lines you clear, the higher your score.