In Starjack.io, you direct a naval fleet around in space to aim and shoot down all enemies. For every enemy you destroy, you will earn a spaceship and you can add it to your army. Keep doing so until you build the largest one in the entire arena, which makes you the ace of the universe! Make good use of your special skill to outwit the opponents, protect your fleet all the time, survive all the dangers and reach the top rank on the leaderboard.
Use arrow keys or WASD for moving the camera. Click left/right mouse buttons to interact.