StudioMDHR's 1930s cartoon-inspired run-and-gun indie title Cuphead will, in its ultimate form, be a trilogy, the game's creators told Kill Screen Daily.

Cuphead, which was shown during the indie game-focused segment of Microsoft's E3 press conference, is about 40 percent completed right now, according to developers Chad and Jared Moldenhauer. The pair, who have been working on the game since 2010 out of their respective homes in Toronto and Saskatchewan, are designing the mechanics after building the art — hence the slow going. The Moldenhauers ultimately plan Cuphead as a trilogy, with expansion packs building on the game's weapons and elements.

The title uses classic run-and-gun mechanics, but instead of running and shooting to the right, the levels are designed around a series of boss battles. Bosses can be engaged in combat from a world map that will be reminiscent of old school top-down action RPGs, such as the early The Legend of Zelda games, according to Kill Screen.

Cuphead is slated to launch in 2015 for Xbox One and via Steam for PC.