You can spend your free time doing all kinds of things. So why not go into outer space? It does not require any additional skills and knowledge. Simply run Galaxy Sky War.
A spectacular space shoot-out awaits in Galaxy Sky War
Embark on a new space mission. Join other participants in the galactic air war. Get in your space fighter and fly to exterminate enemy ships. An exciting adventure awaits you. Fight the alien invaders, shoot with all your weapons and collect bonuses. Right after the first round, you'll be able to upgrade your space fighter: install new units and improve them. This will help improve your combat efficiency and increase your chances of winning. Each enemy spaceship has numbers on it, which indicate the number of shots you need to take to destroy it.