Monster Madness is a three-reel slot by Tom Horn Gaming with a fun alien theme. It uses eight paylines and can be played with bets of 20p and up to £100. Not only can you double your wins via the game's Gamble Feature, but you can also gain cash prizes via the Free Spins Bonus in which extra spins can be earned by landing further scatter symbols.

Our Verdict: Monster Madness is a terrifically fun title from Tom Horn Gaming that comes with eight paylines which make it possible to create winning combinations by landing three identical monsters on horizontal, vertical or diagonal lines on the 3x3 playing area. The Free Spins Bonus gives you the chance to win more free games via the scatter symbol and also includes scatter wilds that can double or quadruple any prizes that they help you to score. Plus, if you're not averse to risk, you can take advantage of the Gamble option in the hopes of doubling your current win.

Design: In the Monster Madness slot game, a group of aliens from outer space have come to visit Earth, and you can see one of the friendly creatures levitating next to you in front of the reels.

A panoramic cityscape provides the detailed backdrop for the Monster Madness slot, and as the reels spin around, you can see cars speeding down the roads and lights twinkling in the skyscrapers and public buildings before you.

There are three reels and three rows of symbols which, combined with the use of eight paylines, mean that you can scoop prizes by getting the same alien symbol or one of the five playing card symbols in three positions that form a diagonal, vertical or horizontal line.

At the bottom of the Monster Madness game screen, there are buttons that let you adjust your stake size, bet the maximum amount, set up auto-play, and view the payouts.

Wild Symbol: The Monster Madness slot includes a blue-and-white laser target symbol which represents the wild. The wild can be used to replace any symbol other than the scatter and scatter wild.

Bonus Feature: Monster Madness awards you five free games when the scatter symbol appears in three locations on the reels during the same spin. In the bonus, you can earn up to eleven free spins with any new scatter symbols that come into view, and thanks to the inclusion of the scatter wild symbol, the Monster Madness slot can apply a 2x win multiplier to any prizes that it helps you to gain.

Gamble Feature: The Gamble Feature becomes available in the Monster Madness slot game directly after any winning combination is created. You can either choose to collect your win or gamble it to try and double the amount. If you choose to gamble, you see a screen with a face-down playing card, and you need to guess what colour you think it is. If you're right, your current win is doubled, and if you're wrong, you lose your win.