Zombie Grid is a top-down survival game in a town at night. Walk the streets, shoot the zombies, break the barricade and reach the safe house. Each round is harder than the last, and you play until the zombies get you.
You can shoot the spawner houses down too. Each one you break stops its zombies for the rest of the round.
You have three guns and can switch at any time.
Every point you score is also experience. There are seven levels, and each makes you walk faster and shoot faster. Levels carry over from round to round.
A zombie is worth its health, so tougher zombies score more. A barricade is worth 15, a spawner house 25 and a cleared round 50. Starting a new game over a kept one still scores what it had. The leaderboard ranks the highest scores first.