Epic Norse adventure is the theme of Thor’s Hammer, a 5 reel, 4 row, 20 to 40 payline slot from Bally Wulff. It comes with re-spins with frozen symbols as well as a bonus feature that awards up to 20 free spins. Join the god of thunder from between 15p and £60 per spin.

You can play Thor’s Hammer using either 20 or 40 paylines – the minimum stake changes from 15p to 30p as a result. There are no other differences between the 2 options. Anyway, Thor’s Hammer has a classical feel. Rather than playing cards, the lower value symbols represent clubs, hearts, diamonds and spades. They’re joined by a selection of objects related to the theme. Look out for the horn, helmet, eagle and longship, each of which pays 5 times your stake if you land 5 on a payline.

Next comes the Norse goddess who awards almost 7 times your total stake. Best of all is Thor himself – 5 of these on a payline awards 10 times your stake. These payouts may not seem particularly large. Symbols can land fully stacked though giving you chances to create multiple winning lines on the same spin. Look out too for the Thor logo which is the game’s wild and replaces all other symbol bar the scatter.

Thor’s Hammer comes with 2 main bonus features. If the same symbol lands fully stacked and fills all 4 rows on reel 1, you’ll trigger the Freeze Spins feature. The symbols on reel 1, and any matching symbols elsewhere on the reels are frozen in place with a respin following. Any matching symbol will be frozen to the cluster. These respins continue until you’ve filled all the reels with the same symbol or you have finished 3 respins. A final payout is then made with all of the clustered symbol in play.

Then you have the Free Spins feature which is triggered when you land 3 of Thor’s Hammer (the scatter) anywhere on the reels – you’ll then be awarded 10 free spins. Helping your winning chances here is the stacked wilds which can land on any reel. You can re-trigger more free spins here too giving you up to 20 in total.

Thor’s Hammer is a simple but entertaining slot – the design has a classical rather than a cartoon feel but can seem a little cluttered at first view. Both of the features are decent enough too. The Freeze Spins feature hit most regularly of the two. We found them to be a bit hit and miss, getting very close to creating a big combination but just missing out by 1 or 2 symbols. The free spins are harder to come by but can deliver.

The Norse gods have provided plenty of source material for slot developers – Thor’s Hammer isn’t the most aesthetically pleasing of them. The features make up for any lack of visual flair though, making it worth a closer look. I still recommend you try Thunderstruck II from Microgaming which is simply a must.