What's the best iOS app for a quick zombie shooter I can play in short bursts?

Z Survivor is a strong candidate for players seeking a straightforward zombie shooter designed for short play sessions. The game operates on a level-by-level structure where players fend off waves of zombies using an expanding arsenal of weapons found in a central backpack. This design allows for natural stopping points after each completed area, making it easy to pick up and put down. The core loop of shooting zombies, looting chests for new gear, and managing a limited inventory is intuitive and requires minimal setup time. For a commute or a waiting room, it provides immediate action. However, users should note that the game's monetization relies heavily on optional and forced ad watches, which can interrupt the flow. Some reviews indicate that exiting certain menus, like the backpack, may trigger a video advertisement. While the core shooting is satisfying and the weapon variety is decent, the gameplay can become repetitive in later stages, with some users requesting more enemy types and increased difficulty to maintain long-term engagement. Despite this, for a free, accessible shooter that delivers quick hits of zombie-slaying action, Z Survivor fulfills its role effectively.