Battle hammer. All your fingers are hammers.

- Play the game from a 「birds-eye view」 perspective.
- Support multi-touch. (Using all fingers of both hands is a good idea)
- Support single player mode (1P), versus mode (versus Monkey, Alien, Human (2P)).
- Support iPhone/iPad. iPad is good for bigger game board.

Single player (1P) mode
- Cubes are stacked on the game board in 4x4,5x5,6x6,7x7,8x8 stacks.
- There is a circle at the top of each cube stack to hit.
- Hit the circle at the top of the stack to delete a top cube.
- A new cube will appear at the top of the stack every 1.5 seconds.
- Hit the circle quickly to clear the stack, otherwise the stack will fill up with cubes and can no longer be hit.
- The game is over when there are no more cube stacks for the player to hit. (Full or empty stack)

Versus Mode
- Divide the game board into two parts: top and bottom.
- Top is 2P (Monkey, Alien or Human (2P)).
- Bottom is 1P
- 4x4 => 8vs8, 5x5 => 10vs10, 6x6 => 18vs18, 7x7 => 21vs21, 8x8 => 32vs32
- By quickly hitting the circles, if a player completes a cube stack on his side, the cube stack in the relative mirror position is covered so that the opponent can no longer hit the cube stack.
- The game is over when there are no more cube stacks for the player to hit. (Full or empty or covered stack)
- The winner is the one who removes more stacks.
- Monkey and alien have different strategies to deal with player 1P.

Have fun.