1993 · Run and Gun · Genesis
Gunstar Heroes was the debut game from Treasure — a studio founded by ex-Konami developers — and demonstrated technical ambitions the Genesis had not previously been pushed to achieve. A run-and-gun with combinable weapon types, enormous bosses, and combat that filled the screen with projectiles and enemies, it established Treasure's reputation for hardware-pushing action design.
Gunstar Heroes was developed by Treasure, founded in 1992 by developers who had left Konami. The game pushed the Genesis hardware to display more simultaneous objects and projectiles than previous Genesis games had managed. The weapon combination system — four base weapons that could be combined into ten distinct weapon types — created varied play styles. The game's bosses, some occupying most of the screen, required different strategies for each encounter.
Gunstar Heroes was developed by Treasure in approximately one year as the studio's debut title. The small team of approximately ten developers, all ex-Konami, designed the game to showcase Genesis hardware capabilities they felt hadn't been fully exploited. Sega published the game in Japan in September 1993.