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.