99 Bricks first looks like Tetris, but then you see that it is actually completely opposite. Instead of removing blocks like in tetris your objective is to build a tower as high as possible. You have 99 Bricks only to achieve it, and physics based behaviour makes your tower a pretty unstable thing!
Use Arrow keys left and right to move a brick. Use Arrow up or Spacebar to rotate it. Use Arrow down to drop it. Press C to dispose of a brick and Z to zoom out. Press P to pause the game.