Steam users, meanwhile, can take advantage of a day-long sale on Warner Bros' Scribblenauts series. For today only, the digital distribution platform is offering Scribblenauts Unmasked and Scribblenauts Unlimited for $4.99 each.
Over on Xbox Live, Microsoft serves up a series of discounts on alien-themed games for Xbox Live Gold members. Featured games include Aliens: Colonial Marines, Team 17's Alien Breed series, and Earth Defense 2025. Discounts remain in effect through next Tuesday.