Cryptologic are making it a very merry Christmas by giving us not one but two new Marvel super hero slots. Captain America and Wolverine are brought to a computer near you soon, and not for the first time. Cryptologic, who have had a long relationship with Marvel released them both a while back but have totally revamped then, changed them up, made them non-progressive and gave them us back. Some of the changes include different colors on the reels and all low paying symbols have been replaced with high cards. There are a few more changes regarding the symbols and indeed some that Marvel fans may not be too happy with as some of the characters trademark clothing and accessories have gone. Gone are Wolverines' boots, badge and Knapsack along with Captain Americas red boots. These new slots have been given the name Action Stacks as the super hero is the wild and can appear stacked. They can stack the whole reel and dropping these in on reels one or two can result in some rather nice pay outs. Also when stacked they become animated which is another nice touch. The Action Stack series from Cryptologic really does make the super hero central to the game, as they not only act as the wild symbol but also the 2000 coins jackpot too. They have of course have scatter symbols and each of them offer a free spin round offering up to 20 spins.