Robot Alchemic Drive

Robot Alchemic Drive or R.A.D., sold in Japan as Gigantic Drive is a 2002 action-adventure mecha fighting video game developed by Sandlot and published by Enix for the PlayStation 2. The game is set during an alien invasion in Japan, with players controlling a giant robot to combat the aliens as humanity's last line of defense.

Created as an homage to the super robot anime of the 1970s and 1980s, Robot Alchemic Drive is unique among mecha games in that most gameplay is not directly controlling the mecha (such as in Armored Core) or in combat sequences (such as Sandlot's similarly-themed Earth Defense Force), but rather by controlling the actual human pilot of the mecha, with visual novel-like dialogue progressing the story between fights.

Robot Alchemic Drive was released in Japan on August 29, 2002, and in North America on November 5, to generally positive reviews, but did not perform particularly well commercially and is now considered a niche title.