New Contract (Perimeter Defense Book #3): LitRPG series

The enemy's at the gate, busy seizing Terran and allied star systems. The situation is getting worse by the second. The star system Unatari - the seat of Crown Prince George - is under threat from the Aliens. It's high time Ruslan came back in order to rescue everything he holds dear from imminent destruction and save Perimeter Defense - the game that has become his life.Realizing he can't stop the enemy with brute force, Ruslan asks the Swarm to send some of their starships to attack the A...