Its been argued the best way to create a successful casual game sequel is to deliver much of what made its predecessor worthy of a follow-up, yet introduce new features to justify the purchase. Tumblebugs 2, from Australia's Wildfire Studios, concentrates too much on the former, delivering very much the same experience as the first game despite a couple of new additions. This sequel to one of the best-selling 2005 titles is indeed a fun diversion, but it'll likely feel like a case of deja vu for many players.