An orange L-Block is a tetromino shaped like an L.This block is known as the nerd of the group, being majorly into philosophy, astrology, and etymology. L-block is a problem solver, helping to get out of most situations. However, he rarely does it on his own, usually needing help from his friends. A purple T-Block is a tetromino shaped like a letter T, a highly adaptable tetromino that can be used to even out a variety of stacked shapes. Fanart Tetris cursor pack with L-Block and T-Block.