There is no way the protect resources you buy verses one you get through game. The refinery hardly gives you enough uncommon resources for ships and the ships take too much uncommon resources to level up. If you can spend thousands and thousand of dollars on packs it is a great game but not for average player that can't spend a lot of money. Definitely not for younger kids because of galaxy chat conversations that can get real nasty. They keep increasing levels to make you spend money to keep up