The game takes place in a war-torn city, where the player must navigate the streets and defend against waves of invading forces. The player's objective is to survive and fend off the enemy, while also trying to identify and destroy enemy strongholds.
The player's primary task is to take up a defensive position and repel the enemy, using a variety of defensive structures and units to aid them. The game runs in the browser, with no download or registration required. The goal is to withstand the enemy onslaught, and the game continues indefinitely until the player's defenses are breached.