Player must build a tower of index cards, with each level consisting of two pre-bent cards with a flat card on top.
1) Set up the cards by bending 20 of them in half horizontally.
2) When the clock starts, player may begin building a tower with each level consisting of two pre-bent index cards placed on their long side with 1 index card flat on top.
3) Player may not make additional creases in the cards.
4) To complete the game, the player must build a 10-story structure within the 60-second time limit, and the structure must remain intact for 3 consecutive seconds.