Gun-Nac was developed by Compile, a studio best known for shooters like Zanac and the Aleste series, and released in Japan by Tonkin House in October 1990 before ASCII Corporation brought it to North America the following September. It turned out to be the last game Compile ever made for the NES, closing out the studio’s work on Nintendo’s 8-bit hardware on a high note that reviewers at the time singled out as one of the best shooters the console ever received. Players take on the role of the title character piloting a starship across eight stages, choosing from five distinct primary weapons ranging from a standard gun to a flamethrower and mixing in one of four secondary bomb types, giving the game an unusually flexible loadout system for an NES-era shooter. That mix of varied weaponry, tight bullet-dodging action, and a lighthearted, colorful presentation set it apart from grimmer shooters of the era, and it’s remembered fondly today as something of an underappreciated gem in the console’s later library.