NOTE: You know if you bought a shop upgrade if your coins goes down. HOW TO PLAY: You can switch between two maps in menu. Then, press play button, and you can choose through 3 modes: Easy, Normal or Hard. Then you spawn. Collect coins and defeat enemy ninjas by collecting ninja stars and using the sword. Arrow keys to move, click to use sword, space to throw ninja stars. Ninja star count in upper right corner, coin count in upper left. You can buy 4 upgrades in the shop (see note above) and you can control music volume and sound effect volume with buttons in upper center. Have fun!