In this game, players take on the role of defenders of a space tower, tasked with protecting it from a relentless onslaught of incoming attackers. The player's primary function is to position and upgrade defensive structures along the tower's perimeter, attempting to thwart each wave of invaders.
The ultimate objective is to survive as long as possible against the surging hordes of enemies, each with its own patterns and vulnerabilities. The game runs entirely in the browser, with no need to download or register. By effectively deploying defenses and minimizing damage to the tower, the player can accumulate points and unlock new items to aid in their survival efforts.