Take a trip to the wild American frontier in Mustang Money, a 5 reel, 100 payline video slot from Aussie developer Ainsworth. The chief attraction in this high variance affair is the free spins bonus feature where you can boost your wins with a potential 10x multiplier. Play from between £1 and £75 per spin.

After building a huge following in brick and mortar casinos across the pond, the online version of Mustang Money keeps to much the same recipe as the original. Visually, Mustang Money sums up the spirit of the American West. Look out for cactus plants, soaring eagles, gold bars and dollar signs on the reels alongside playing card values from A to 9. They are simple, almost monochrome images that evoke the spirit of the desert.

The wild horse is the game’s wild, appearing on reels 3, 4 and 5 and substituting for everything bar the scatter (and the coin in free spins round). The Mustang Money logo is the scatter – land 3, 4 or 5 of these anywhere on the reels and you’ll win two, 10 or 100 times your total stake.

You’ll also trigger Mustang Money’s only feature, the Free Spins feature – here you’ll be awarded 10 free spins. You’ll notice an extra symbol, the coin, appears on the reels during your bonus games. It only lands on reels 2 and 4 but can deliver some impressive extras when it does.

If the coin lands on reel 2 as part of a winning combination, that payout will receive a 1x or 2x multiplier boost. If the coin is part of a successful payline on reel 4, the winning amount will be boosted by a multiplier of between 1x and 5x. If coins hit on both reels, the multipliers will be combined offering the chance to really get the cashier rolling. You can also trigger more free spins during the round. Three or more scatters will get you an extra 5 free spins.

The variance in Mustang Money is on the high side – 100 paylines keep the action flowing along nicely in the base game. Microstakes players can quickly fly through their bankroll if they’re playing all 100 lines for a minimum stake of £1. It’s the free spins round where this slot comes into its own – the multiplier wins can make a big difference, especially if you manage to land them in combination.

Mustang Money’s simple diet of high paced action and volatile payouts made it a hit with land-based casino players – online fans are usually a little more discerning when it comes to visuals and gameplay. Mustang Money may not reach the dizziest of heights but it’s playable enough and can deliver a stampede of coins if the multipliers work their magic.

If you like land-based slots, you should try Zeus from WMS or Cleopatra II from IGT which are classics both online and in bricks and mortar casinos.