In Ipso, players build a pyramid of numbered cards and try to form rows of increasing numbers to score the most points. On your turn, take one of the two face-up cards in the center and replace a face-down card in your pyramid with it, then place the replaced card face-up in the center. Once all the pyramids are revealed, you can either keep your Star card for 3 bonus points or discard it to draw one last card and improve your pyramid. Only increasing rows score points: mixed-color rows score 1 point per card, single-color rows score 2 points per card, plus 1 point per Star, and 3 additional points if you kept your Star card. The player with the highest total wins.