Guardic Gaiden

Guardic Gaiden (ガーディック外伝 Gādikku Gaiden) is a 1988 hybrid action-adventure/shoot 'em up video game developed by Compile for the Nintendo Entertainment System (NES). It is the sequel to the 1986 MSX game Guardic and was published and released in Japan by Irem in 1988. It is known as The Guardian Legend in North America Europe.

In the game, the player controls a lone protagonist, the Guardian, who is on a quest to destroy a large alien-infested world named Naju before it reaches the planet Earth. The player must deactivate ten safety devices scattered throughout Naju, thus activating the alien world's self-destruct sequence. The player explores Naju in a non-linear fashion and can acquire different weapons during the course of the game.