The game is a typical side scrolling shooter, going against the trend of other Capcom shooters, such as 1942, which are vertically scrolling shooters. However, like other Capcom shooters, the player has an energy bar that is consumed over the course of a single life as the player sustains damage. This trait is highly uncommon among other comparable arcade-style shooters which normally use a system of reserve lives, where one of which is lost upon a single enemy hit. (wikipedia.org).