Deadly 30 is an engaging 2D zombie survival shooter that blends tower defense elements with classic action gameplay. Players are challenged to survive for 30 nights in a world overrun by zombies, where they must strategically manage resources, upgrade their weapons, and fortify their base. The game features a unique day-night cycle, allowing players to gather resources during the day and defend against increasingly difficult zombie attacks at night.

Players can choose from three distinct characters, each with their unique abilities and weapons, and can command their squad effectively during battles. The game offers an automatic defense system for team members, allowing players to focus on direct combat. With a variety of enemy types, including fast, slow, and explosive zombies, along with an upgrade system for weapons and defenses, Deadly 30 provides a compelling mix of strategy and action with its retro 2D graphics.