Glu Mobile’s released Contract Killer: Zombies, a much anticipated sequel, just in time for the Halloween season. This Android game is enough to get your blood pumping, slaughtering the walking dead at every turn. If you prefer “cutesy” over gory, Pretty Pet Tycoon is a noteworthy launch this week, taking after wildly popular time management games like Paradise Island and Tattoo Tycoon. Gameloft also had another release this week, delivering an HD version of Let’s Golf! 3 into the Android Market.