Mr. Heli no Daibouken

Released by Irem in 1987, *Mr. Heli no Daiboken* (known internationally as *Battle Chopper*) is a side-scrolling shooter starring an adorable helicopter. The game was highly regarded for its strategic system of collecting "crystals" to upgrade weaponry, as well as the fun of navigating its diverse terrain. Featuring a whimsical world imbued with Irem’s signature gameplay quality and meticulous attention to detail, this ambitious title remains a memorable entry in arcade history.

To save a planet controlled by the mad scientist Muddy, the heroic helicopter "Mr. Heli" takes a stand. Mr. Heli heads deep into the planet, embarking on an adventure to thwart Muddy's ambitions.