Osiris is a 5 reel, 4 row, 50 payline slot which is a collaboration between NextGen Gaming and GamesLab. Available to play across all devices from 50p to £80 a spin, the game in based on an Egyptian God who was known as the god of the afterlife. It comes with 3 free spins bonus features which offer tripling and locking wilds.

Visually, Osiris offers nothing spectacular – set inside an ancient pyramid, it has a dark and seductive feel to it. The soundtrack definitely helps create that experience. Anyway, symbols on the reels include playing cards A, K, Q, J, 10 and 9 as well as temples, masks, cat gods and Hathor. Ausir is the wild symbol and replaces all symbols bar the bonus scatter, Osiris.

In terms of bonus features, there are 3 – you need to get 3 or more Osiris scatters to trigger them. If you get 3 anywhere on the reels, you will get a free re-spin in order to get more scatters. This is because 3, 4 or 5 scatters will give you entry to a different bonus feature – details are below.

First up is the Ausir feature which is played when you get 3 Osiris scatters – you will receive 9 free spins. More importantly, winning combinations that include 1 or more wild symbols will triple your outcome – i.e. a 3x multiplier. You can also win an extra 9 free spins if you get 3 or more scatters – this will take your total to 18.

Then you have the Wild Magic feature which is access when you get 4 Osiris scatters – this will also give you 9 free spins. Look out for the Ausir wild as this will lock in place in the middle position of reel 5 throughout the feature. A further Ausir wild will also lock in position prior to each free spin. You can also win 9 more free spins for 3 or more scatters which could result in a total of 18 wilds being locked on the reels.

Finally, there’s the Underworld feature which is triggered when you get 5 Osiris scatters. Again, you will receive 9 free spins with the chance to retrigger – to give you 18 free spins. More importantly, winning combos involving 1 or more wilds will subject your wins to a 3x multiplier.

Furthermore, an Ausir wild locks in position in the middle position of reel 5 before the 1st free spin with a further wild being locked before each subsequent free spin. Basically, you get both tripling and locked wilds as the Underworld feature combines the Ausir and Wild Magic features.

Osiris is a medium variance game with maximum wins of up to 1,000 times your stake on each free spin – the most lucrative feature is the Underworld feature but it’s much harder to trigger naturally. Overall, it does offer a common theme but the gameplay is original and can be highly rewarding. If you like unusual ancient Egyptian themed slots, WMS’ Lady of Egypt and Quickspin’s Phoenix Sun should do the trick.