Space shooter - the galactic emperor 2 FREE

I have a challenge for you! Beat the final boss. Only the bravest ones can do it. The game is simple: - You begin with a level 1 ship. - Your level and your strength grows as you play more. - You have to pass through 40 waves in a row, starting with wave 1. Sound simple, right? - Buy upgrades with the gold! Upgrade your ship and destroy the galactic emperor!