Triple click Green Flag. This is a two player game. Arrow keys move the Green Tank. Enter shoots for the Green Tank. WASD moves the Orange Tank. Space shoot for the Orange Tank. Gray are walls. You can shoot up the walls and they will eventually break. If you get stuck in the wall or the edge, go in reverse to get out of the wall or the edge. Get the powerups that will appear. If your tank is changing colors, than that means that you have a shield. Have Fun!
Credit to @griffpatch for the enter key sensor. Credit to @LiquidMetal for the health bars. Credit to somebody else for the tank sprites.