A canine crime fighter is the star of Rex, a police-themed slot from Novomatic. Based on an Austrian TV show, it comes with a bonus feature that awards up to 32 free spins with a second wild added to the reels. Playable on all devices, stakes start at 40p per spin.

Kommisar Rex, the Austrian detective series on which this slot is based, may never have reached UK TV screens but all you need to know about the back story is that a German shepherd called Rex is central to the action. Visually, the game has a strong police feel.

Novomatic’s lower value playing cards are present and correct. They’re joined by handcuffs, a gun, a police chopper, a cop car and Rex’s doggy dinner. Most rewarding of all is Rex himself – find 5 Rex symbols in 1 of the game’s 40 paylines and an award of 1,000 coins will be heading to the cashier. The base game comes with a single wild, Rex’s paw print – this replaces all other symbols with the exception of the scatters.

There’s a Free Games feature on offer in this police procedural – to trigger it, you’ll need to land 3 flashing police light scatters on reels 1, 3 and 5 on the same spin. As well as a payout equal to 5 times your total stake, you’ll be awarded 16 free spins.

Novomatic usually spices up its bonus features and the added wrinkle here is the addition of a second wild symbol. As usual, Rex’s paw print is wild – so too though is Rex’s doggy dinner. You can also retrigger the feature giving you a potential 32 free spins in total.

Novomatic slots are usually simple affairs when it comes to design and gameplay and Rex largely sticks to the developer’s usual recipe. The base game action offers little in the way of thrills but the action picks up markedly during the bonus round where the presence of 2 wilds can quickly make an impact.

This is a pretty volatile game too as he variance here is in the medium to high range so expect some down spells punctuated by the occasional decent win. Austria’s crime-fighting equivalent of Lassie may be unknown to UK viewers – the slot he stars in doesn’t offer much in the way of visual flair but for some simple action you won’t go too far wrong. If you like the police theme, Playtech’s RoboCop is recommended.