R-Type was one of the first shooters to actively employ the concept of strategy in a side-scrolling shooter, primarily through the use of the "Force Unit." As before, the Force Unit is an indestructible satellite that can be strategically mounted on the front or back of your ship, in addition to being launched into remote corners of the screen to deal with enemies before your ship arrives there. Not only is this useful, in many cases it is essential to completing an area and surviving. R-Type Delta has two new ships in addition to the original, each with its own unique satellites and weapons