"SD Gundam Gaiden: Lagdou Heroics" is a role-playing game developed and published by Bandai for the Game Boy, released on October 6, 1990. Set in the SD Gundam Gaiden universe, the game blends the series' Gundam-inspired characters with classic Dragon Quest-style RPG mechanics, creating a charming fantasy adventure. Players take on the role of an amnesiac Knight Gundam who, alongside companions including the warrior Laser Cannon and the monk Space Tank, embarks on a journey to repel evil forces threatening the medieval kingdom of Lagdou. Gameplay revolves around exploring dungeons, solving puzzles, and engaging in turn-based combat to gain experience, learn new skills and magic, and acquire better equipment. The game also features hidden elements and side quests that boost replayability. In 2019, the DMG translation group released a Chinese localization with bug fixes and polishing, making this Game Boy classic more accessible to modern players.