R-Type Delta is a shoot 'em up set in 2164. The game offers different fighters, with different Force and Wave Cannon combinations for the player to choose from. It also introduces the Dose System, which allows Forces to absorb energy through collisions with projectiles or enemies. Every Force has a Dose Gauge, and when the Dosage becomes 100%, the player can use the fighter's Delta Attack, a superweapon attack whose form depends on the fighter being used. (wikipedia.org)