Devil Engine: Complete Edition is a 2-D side-scroller shoot-em-up that blends classic arcade action with modern pixel art. Players pilot the spaceship Andraste, battling hordes of demonic enemies while collecting power-ups and upgrading weapons. The game features multiple difficulty levels, a variety of enemy types, and a boss-fight system that rewards skillful timing and strategy. It also includes a soundtrack and a gallery of in-game artwork. The Switch version is a direct port of the original 2019 release and contains all content from the original game, with no additional DLC or special edition extras.