Sagittarius: 2172 is a real-time puzzle/space strategy game. Instead of using classic color tetris rules, Sagittarius: 2172 revolves around a spaceship, which can be upgraded and can seriously change course of game. You can focus on construction, research or acquisition of resources. You also can use special abilities, such as time control or missile attack to facilitate game. Press LEFT ARROW KEY to move figure left, RIGHT ARROW KEY to move figure right, UP ARROW KEY to swap blocks and DOWN ARROW KEY to move figure down. Press ESC to pause (during game is paused you can build and upgrade modules of mothership). Use 1-4 NUMBER KEYS to use abilities. Good luck!