One you place your cubes, you place your flag to block others' moves. Players score points for each of their own colored blocks left visible at the end of the game, as viewed from every angle except the bottom. Ctrl takes minutes to learn but has enough depth to engage the whole family. Once you've taken Ctrl, you can't stop coming back for more! Trust us, this game is special. It's the type of game you will want to play again the second you are through. 2-4 players, 20 minutes.