Brain

This is a side-scrolling shoot-'em-up, in the style of Gradius. You play as a helicopter gunship, and when you enter a building as a spaceman(who can shoot in eight directions). Interestingly, you can manually scroll up and down as the game scrolls right, but cannot scroll backwards. Destroyed enemies leave power-ups (improving your firepower), smart-bombs which trigger on collecting them, and fl...