PopCap and Square Enix’s puzzle RPG Gyromancer is half price on Steam ($7.49 down from $14.99). Speaking of PopCap, head over to their website for great deals on game bundles: the Bejeweled Bundle (Bejeweled, Bejeweled 2 and Bejeweled Twist) for $29.95, Zuma Pack (Zuma and Zuma’s Revenge for $29.95) or the ultimate Platinum Pack (21 PopCap games for $89.95 at a savings of 78%). Reflexive is selling the Nat Geo: World Adventures Bundle (Lost City of Z, Herod’s Lost Tomb Mystery of Cleopatra and Plan It Green) for $16.75. Sandlot Games’ free game of the week is Barnyard Invasion.