Our planet needs a savior from the unknown monsters trying to get into our world. You are the engineer of the space station and you have defending machines to stop them! If you are a true fan of the tower defence genre - you will find this game very addicting. Build various structures to defend the world from the attacks of the evil monsters! Each enemy getting to the portal becomes a real threat to the planet! Focus on the objective and plan your defense looking at the map! Monsters will be