Although this slot machine is themed on Batman, his arch enemy, the Joker also features on it. The Dark Knight slot goes under the name that Hollywood labelled Batman with but it is still about Batman and his fighting of crime on the streets of Gotham city. To comply with the theme, the symbols on the reels reflect different regalia from the Batman movies and also of course include symbols representing the caped crusader and also his arch enemy the Joker.
Batman and the joker do not just appear as symbols on the reel though; they can also appear at any time whilst you are playing the slot machine, to give you a helping hand in raising your credits. Either one of them can randomly appear at any time and when they do, they will award you with a special bonus. This bonus will certainly be welcome as it will either be free spins or a multiplier which can potential lift your credit level.
Batman is usually the wild symbol, able to replace any other symbol except for the scatter but the Joker may also sometimes want to be a wild and if he does, he will blow up a regular symbol on the reels and replace it with a wild version of himself.
The scatter symbol is the Joker and if you are able to get 3 of his symbols on reels 3, 4 and 5, you will trigger the bonus round. On this slot machine the bonus round consists of 15 free spins and even during those free spins, Batman or the Joker can still appear to award you one of their bonuses.
It is possible that when you play this slot machine, you could be awarded a randomly allotted progressive jackpot but as there are 4 of these progressive jackpots available, once you have been selected to win one, you must select either Batman or the Joker to play a game to see which of the 4 jackpots it is that you have won. The jackpots are high paying so choose your choice of player carefully.