How to play:
- One player builds the tower on a flat surface by placing three blocks in each layer at right angles to the previous layer. All blocks with instructions must be face down. When you’ve finished, you’ll have a 20-storey tower.
- The player who builds the tower goes first and play then continues to the left.
- When it’s your turn, remove carefully a block from anywhere below the highest completed layer. Flip the block over and follow any instructions given, before replacing it back on top of the tower.
- Keep removing and stacking blocks until the tower falls. Whoever knocks it over is the loser!