You must navigate the field of blocks, surviving as long as possible. Each block has a number, governing where you may move next. You may only move to blocks whose numbers are higher than, the same as or exactly half your current block's value. If you are on block 9 however, you can move to a block 1, to start over. You lose the game when you can no longer move! This is a fun, thoughtful puzzle game, with surprising depth!