NEW VERSION: http://scratch.mit.edu/projects/Happypieman/1728910 .:Download for a better experience:. Use the arrow keys () to move left and right. Use space to shoot lasers, and push 's' to use shield. Note: Shield has battery, and once it is drained, you cannot use it until it recharges to FULL. New Additions: Instructions--instructions button in the menu added. Torpedoes--push 't' to fire a torpedoe, which does 50 damage! You only have three. Powerups--get one to increase your torpedo level. Better Interface-- Much cooler looking interface added.