Gaia Saver : Hero Saidai no Sakusen

Gaia Saver: Hero Saidai no Sakusen ("Gaia Saver: Hero's Greatest Strategies") is a 1994 Super Famicom turn-based RPG and part of the Compati Hero Series. It features characters from Gundam, Ultraman and Kamen Rider, all in a super deformed form. It's distinct for being a Compati Hero game that wasn't developed by Winky Soft, but rather eventual Guilty Gear developers Arc System Works.

The goal of the game is to save the Earth from invading aliens. The humans of the world work together with the SD characters in three separate battle parties. The first character is SD Gundam's protagonist Knight Gundam and others become unlocked as the game continues.