RayStorm is a
shoot 'em up. The player views their ship from a distanced perspective while gunning down enemies in the game's vertically scrolling stages. At the beginning of the game, the player must choose one of two ships; a third secret ship is available in ported versions. The player uses a
vulcan-like laser weapon as their primary offense, and a missile weapon which can
lock onto multiple targets and gain a combo multiplier, accumulating into a point total. Additionally, each ship has two special maneuvers. The
Special Attack is initiated when the player fills a bar to the maximum by engaging in multiple lock-ons. When full the player can unleash a massive screen wide attack with a brief period of invincibility afterwards. The second, the
Hyper Laser Assault, executes a special attack unique to each ship, and is performed by setting all available lock-on attacks on a single target and firing. Home versions contain two gameplay modes: the "Arcade Mode", which preserves the look and feel of the original arcade version, and the "Extra Mode", which has enhanced graphics, additional enemies, modified bosses, and tougher difficulty, as well as a different ending. Also in Extra Mode, when the player gets a "continue", the score accumulated from the first stage will be retained (i.e. score will not reset to zero). Completing either mode unlocks a "stage select" option to play individual stages in the completed mode (except for the final stage) for a high score, while succeeding in both modes unlocks a "13 Players" option. The "13 Players" option requires the player to complete the game using a total of 13 ships from 5 groups: three R-Gray 1 ships using "manual" control, in which primary and lock-on weapons are controlled separately; three R-Gray 2 ships, with manual control; three R-Gray 1 ships using "auto" control, in which primary and lock-on weapons are controlled with the same button; three "auto" R-Gray 2 ships; and one
R-Gray 0 "prototype" ship. Either mode can be played with this option; completing the game under Extra Mode with this option reveals an additional
epilogue. A
high-definition version of the game, titled
RayStorm HD, includes all three R-Grays and the R-Gear, a fourth ship that fires homing missiles. ==Development==