Wolf Run is part of IGT's 40 line slot range. It features free spins and stacked wilds and used the 4X5 reel layout rather than the the more common 3X5.
The game comes in two cabinet types with a Game King version and an AVP (Advanced Video Platform) version. The game is very volatile but is still popular in casinos around the world due to the chance of big jackpots for a small bet.
Wolf Run is only found in the penny coin size but you can bet as much as 800 coins per spin (20 coins per pay-line) which comes to $8 on a penny machine. The biggest draw card of Wolf Run has to be the stacked wild symbols.
The Wolf symbols appear in big groups on the reels so you can get a whole screen of wilds. As usual the wild symbols award the top jackpot so the top spin is a full screen of wilds which pays 20,000 coins per coin bet.
The Bonus symbols only appear on the middle three reels but are what you need to trigger the free spin bonus. Get all three and you win 5 free spins.
The free spins can be re-triggered and during the free spins there are more Bonus and stacked wilds than during regular play. This makes getting a re-trigger and the highest pays easier during the free games.