Border Down

The game is a side-scrolling shooter in which you control your ship and try to survive the onslaught of enemy attacks while you attempt to clear the levels. You'll need to upgrade your weapons using collectible power-ups, but the game mostly relies on a power bar that fills as you destroy enemies and unleashes your super weapon at the expense of decreased normal firepower. The game also features a unique "border" system which involves three separate routes through each stage.