Thought you were awesome at Tetris? Guess again. Tetris: The Grand Master is a series of challenging Tetris games developed by Arika, intended for advanced players. The TGM series plays a bit similar to usual Tetris games (specifically, Sega's versions of the game). However, there are a few mechanics that alter the game dramatically. Leveling up, for instance, is no longer just done through clearing lines; instead, every piece you drop will raise the level counter by one, as well as clearing lines (one per line clear). However, level numbers also take on a different meaning: the game speeds up only at particular levels, rather than with every level. The level stops going up at level n+99, where n is a multiple of 100; at that point you must clear a line to level up.