Not only can they be purchased in the Shop for 300 Uridium each unit, but you can also earn them by: * Completing a Galaxy gate and being rewarded from: * Alpha Gate: 2 log-disks * Beta Gate: 4 log-disks * Gamma Gate: 10 log-disks * Delta Gate: 8 log-disks * Epsilon Gate: 10 log-disks * Zeta Gate: 50 log-disks * As a random reward from spinning in the Materializer * Bidding and winning on it through the Auction * Logging in daily until day 5 from the Daily Login Bonus * Randomly from salvaging Pirate booty boxes * Purchase on a special deal where they come at a cheaper rate, only available with Payment