The Middle Ages are the inspiration for the latest new slot from WinADay Casino. The medieval themed Castle Siege is the online casino's 30th premium slot launch and WinADay is celebrating with a raft of giveaways.First and foremost is a free $30. Simply use the code FREECASTLE to claim the cash. A 100% matched bonus is on offer to depositers using the code CASTLE100 with a further 40% available with the code SIEGE40. Be quick though, as these codes are only valid until 21 December. A further $1500 will be awarded via a special prize draw. To be in which a chance of bagging the cash players must take at least 60 spins on Grande Vegas' slots between now and 28th December.Fans of Game of Thrones are likely to enjoy Castle Siege which challenges a gallant knight go on the hunt for treasure. Destroy the castle and the lucky player will scoop one of a trio of local jackpots.WinADay has done something special to mark the launch of its 30th premium slot. Castle Siege is the first of the site's games to feature a sticky wild. Players can look forward to free games if the Wild symbol appears while trumpets are out and flags folded. During the free game period, the Wild turns sticky, replicating itself in nearby positions.“We could have made it a Double Wild, or an Expanding or Stacked Wild,” said Michael Hilary, “But when our designers came up with this Sticky Wild concept – an animated, expanding wild that sticks – we knew they were onto something!”Complementing WinADay's expanding premium slot range are 15 penny slots as well as a host of video poker, roulette and keno titles.Like its other premium content, Castle Siege is fully optimised for iPhone, iPad and Android handsets.