Space Monsters

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  • High average RTP
  • Interesting bonus game
  • 15 free spins feature
  • Seems highly volatile
  • Repetitive ‘Space Invader’ soundtrack

Space Monsters is a 5-reel, 3 row online slot developed by World Match with an RTP of 98.11 per cent. It has wilds, a bonus game and free spins, and is an alien-themed slot.


This is a space and alien-themed slot with 20 non-fixed paylines, wilds, bonuses and free spins. It has a higher-than-average RTP of 98.11 but plays like a high variance game, with wins that do not seem to land that regularly.

Space Monsters Theme, Graphics & Soundtrack 

This is an alien themed slot with fairly simplistic, cartoon-style graphics and a tinkling Space Invaders-style soundtrack. It seems like the theme wants to take you back to bygone days when simple computer games were the order of the day. Whether you will enjoy this journey, will depend on how sophisticated you like your slots. If you like the theme, you may want to give the Reactoonz slot a go.

Space Monsters

Space Monsters RTP and Variance

Space Monsters is said to have a theoretical return to player average of 98.11. Considering that many games have an RTP of around 96 per cent, this is well above average. Having said that, the wins do not seem to land that often when you play this game. While we could not find out what the official variance of this game is, playing it gives the impression that it is a highly volatile slot. While we did not experience many wins when we played, there are some nice prizes on offer, which could line up if you choose to give it a go.

How to Play Space Monsters

As is typical of World Match slots, the gameplay is amazingly easy to understand. If you are new to the entertainment of spinning online, however, here are a few tips to get you rolling:

  1. Your first task is to choose how many lines you want to play and how much you want to bet on each of these lines. 
  2. Choose how many lines you want to play using the ‘lines’ button. Opt for 1, 5, 10, 15, or all 20 lines.
  3. There are 7 betting choices when it comes to how much you want to stake on each line. The choices are: 0.01 per line, 0.2 per line, 0.5, 0.10, 0.20, 0.50 or 1.00 per line.
  4. If you want to bet the maximum possible, which is 20.00 per spin, then simply hit the Max Bet button.
  5. To make life easy, you can also use the autoplay tab and click up to a maximum of 1,000 spins. This is how many games the slot will spin without you having to hit the arrow-style play button.
  6. Click on stop or the spacebar to put an end to the autoplay session or to interrupt the game.
  7. Click on the settings tab to switch the soundtrack off.
  8. Hold down the play button to opt for Fast Play mode, where the reels spin faster.
  9. Click on i and then ? for more information about the game.
  10. Go into the i information menu and choose the trophy to view the game’s paytable.

Bet Sizes & Paytable Wins

There is plenty of choice when it comes to how you want to bet when you play Space Monsters. If you are a cautious spinner then you can spin the reels for just 0.01 per spin. If you are veering towards the high roller camp, however, the maximum bet of 20.00 per spin should satisfy your need for an adrenalin rush. The wins you receive will reflect how much you choose to stake on each spin. To give you an idea of the prizes on offer, take a look at what you could win if you choose to bet the maximum amount and get a 5-of-a-kind combination:

Five Wild symbols - 7,500

Yellow alien - 500

Blue and pink aliens - 250

Free spins - 250 (plus 15 free spins for three or more of the symbols)

Purple alien - 150

Blue shark and green alien - 100

Orange and black beast and light pink and blue monster - 75

Space Monsters Bonus Features 

Space Monsters has free spins, wilds and a bonus game. If you get at least 3 of the Bonus Game symbols you will trigger the Space Monsters bonus game. Your job is to shoot at least 6 of the monsters on the screen and the totaliser will display how much you have won.

Free spins are awarded for landing at least 3 of the free spins icons. Enjoy 15 free games, along with a free spins standard prize which will depend on how many of the symbols you land. The slot also has wilds which can substitute for other symbols and help to create winning combinations.

Space Monsters Review

This feels like a fairly basic slot, despite the fact that it does have free spins, wilds and a bonus game. The graphics are definitely not the slickest around and there is an ‘amateur’ feel about the game. That does not mean that it cannot be entertaining, however. There is a charm in its simplicity and, if you are a fan of Space Invaders, or just enjoy a simple slot, then this might be a game for you.

Disclaimer: Space Monsters trademark / license is owned by World Match. This site is not endorsed by World Match.

* This button takes you to an external third-party partner real money casino website. Although we try and match games with Casinos that have them, we advise that you double-check the slot content on the casino website before making a deposit or signing up.

Slot Data
Slot Name: Space Monsters
Software: World Match
RTP: 98.11%
Paylines: 20
Reels: 5
Min Bet (all lines covered): £0.01 (GBP)
Max Bet: £20 (GBP)
Top Win: 7500
Features: Bonus Game, Wild Symbol, Scatter Symbol, Free Spins, 5 Reels, Mystery Symbols
UK Available in GB? Game is not available in GB.


Does Space Monsters have free spins?

Land at least 2 of the free spins symbols and receive a prize and 15 free games.

Is there a bonus game in Space Monsters?

You will trigger a separate bonus game if you manage to land at least 3 of the bonus symbols. You will get the chance to shoot monsters to win a prize.

Can I choose how many lines I want to play in Space Monsters?

Yes, you can choose between 1 and 20 lines to play. You can also decide on how much you want to bet on each line. The range is from 0.01 to 1.00 per line. This means that you can bet anywhere between 0.01 and 20.00 every time the reels spin.

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