Pull a block from the stack, then try to add it to the top without toppling the tower. Race the clock, stack 2 blocks, pick an opponent to take your turn, use thumbs only, team up, or place the block anywhere but the top row.
Pull a block from the stack, then try to add it to the top without toppling the tower. Race the clock, stack 2 blocks, pick an opponent to take your turn, use thumbs only, team up, or place the block anywhere but the top row.