Codename Cure is an engaging first-person co-operative zombie shooter designed for Mac users, utilizing the Source Engine for immersive gameplay. Players can team up with up to five participants to tackle dynamic, objective-based missions set in a post-apocalyptic world. The game focuses on fast-paced action where special military operatives must eliminate zombie threats while completing critical objectives. Equipped with a variety of powerful weapons and tools, such as assault rifles, shotguns, and sentry guns, players must work together to clear infected areas by strategically planting explosives and making quick escapes.

The gameplay experience is versatile, allowing for both online and offline play modes, with the option to include computer-controlled teammates. Codename Cure features a range of difficulty levels that adjust according to the number of players in the game. Players can choose from five distinct classes—Pointman, Support, Assault, Technician, and Sniper—each offering unique abilities to enhance teamwork and strategy.