An experimental game that tries to combine first-person shooters and tower defense genres. Players take control of the elite soldier Skye, who was sent to defend her hometown from a crowd of unknown alien-monsters.

At the beginning of each map, the player has time to place the attacking towers and build a maze along which hostile creatures will move. The main task is to protect the core, which can withstand a small amount of damage.

There are 8 types of the tower, which differ in functionality: attack towers, towers-teleports, and towers, which affect the characteristics of enemies. Also, the player can inflict damage with his weapon. there are 10 types of enemies in the game, 3 of which are and will require a special tower to defeat. At the end of each mission, a “fat” enemy appears on the map – the boss, which deals more damage to the core and which is harder to beat. Multiplayer is not available in this installment of the series.