A casino on a 1930s airship is the somewhat unusual theme in Cazino Zeppelin, a 5 reel, 20 payline slot from Yggdrasil Gaming. This release comes with a free spins bonus round as well as sticky wilds and wild transfers. Take to the air from between 20p and £10 per spin.

A group of very strange looking gamblers adorn the reels. The quartet are the game’s biggest payers, with the pipe smoker the biggest payer. Find 5 in an active payline and a 2,000 coin jackpot will be heading to your account. The gamblers are joined by multi-coloured hearts, diamonds, clubs and spades which are the low value symbols.

The main feature is the Free Spins feature which is triggered when 3 or more scatter symbols appear on the reels. Three scatters gives 10 free spins, four provides 15 with five offering 20 free games. You’ll also win a 40 coin payout.

You’ll also benefit from both wild transfers and sticky wilds during the feature. Any wilds that are on the reels when the free spins are triggered are transferred to the feature and will remain in place for the duration of the free spins.

Any wilds that hit during the free spins round will turn sticky and remain in position throughout the free spin session. If the wild appears on all 5 reels at any one time (they don’t have to be on the same row or payline), you will be awarded 5 more free spins. This can only hit once during the feature.

When developer Yggdrasil Gaming released Casino Zeppelin, they described it as “a game about the high rollers in a high-in-the-sky zeppelin casino, designed for the high rollers and created by the new high rollers!” That’s certainly the case as the variance is very high. There’ll be plenty of dry spells between the big wins so you’ll need to manage your bankroll carefully as well as display plenty of patience.

The steampunk style graphics and magical, orchestral soundtrack make Cazino Zeppelin a joy to play, especially as the animations are silky smooth. Graphically, it bears some similarities to NetEnt’s Steam Tower (which is also a very good game).

Airships weren’t noted for their speed but Cazino Zeppelin rattles long at express pace. If you like volatile slots that combine high risk with high rewards, then this will be right up your alley. And with wins of up to 2,000 times your stake on each spin, those rewards can be sky high. For a brilliant high variance slot, try Microgaming’s Immortal Romance.