Gun War Z1 is a mission-based zombie shooter: a virus has spread, locations are overrun, and you clear them one at a time while rescuing the people trapped inside. Rockets are available on a key for the moments when a rifle isn't enough.
The structure is level-by-level rather than endless, which gives it a sense of progress that wave shooters lack — each cleared location is a location that stays cleared.
Clear each location of zombies and rescue the survivors trapped there, progressing through missions rather than surviving endless waves.
They're on their own key and best saved for groups — a rocket into a cluster is worth far more than one used on a single zombie.
Yes — it runs in the browser with nothing to install.