The game tracks your progress as a pilot for the Space Corps. As you play, you don't just find power-ups; you find data logs and defeat specific enemies. This unlocks new variations of the R-Fighter on a massive flowchart called the "Development Tree."
: To access this extra stage, you must clear Stage 3 ("Battleship Raid") specifically using ship #69 "Cross the Rubicon" . R-type Final Ps2 Iso Jpn