Command up to 3 defenders where there will be tons of enemy waves that will try to destroy your base. Equip a variety of weapons in which you can unlock and upgrade as you advance in the game.
Deploy your units to ambush the passing by enemies. Enemies will return fire so beware that your troops may be killed. Luckily, allied airplanes will fly by to assist you.
Conquer the galaxy by growing your planets, producing fleets, and destroying the enemy. Build planetary facilities, research technologies, and assemble fleets to protect your base and to attack.