Ultimate Crystal

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  • Innovative images
  • Spot-on music for background and spins
  • Decent range of bet size options
  • Below-average RTP
  • Limited bonus options

Ultimate Crystal is an online slot created by Kajot. This traditional-style game has five reels, 10 betways, an RTP of 95 per cent, and medium variance. Features include expanding wilds and respins.


Ultimate Crystal is a great example of what you will find in the Kajot free slots library. This interesting sci-fi/retro video slot offers a modern - or you could say new age - take on the ever-popular traditional game format.

You are not going to see any fruit amongst the crystal-heavy symbols; however, there are a couple of clever images that pay tribute to the pioneering slot designs of the past.

Graphics & soundtrack 

From the moment you first feast your eyes on Ultimate Crystal's screen, you just know it is going to be a little different from run-of-the-mill slot games. There is no grid, which means the exciting icons appear to be floating freely in space on a screen edged with circled numbers. This adds a suitable sprinkle of difference to the mix.

The entire picture is otherworldly, with regular flashes like a photo is being taken. The camera focus slowly zooms in and out, with this all adding up to a surreal but compelling picture that combines perfectly with the lights sparkling from the crystals.

There are some lovely images, from the stunning sets of pretty coloured crystals to the red 7 symbol emerging from a split red crystal. The golden double bar icon also sits inside a split gold crystal.

A dynamic soundtrack adds a lot to a slot like this, so it is great that Ultimate Crystal’s designers have come up with a good one. It is very futuristic-synthesizer in style, which is perfect. As the volume dips while the reels are spinning, there are none of the ear-assaulting sound clashes that are present in some other games.

Ultimate Crystal

Ultimate Crystal RTP and variance

The 95 per cent RTP this slot offers is below average. It is paired with medium variance, so you shouldn’t expect overwhelming payouts.

How to play Ultimate Crystal 

At first glance, the control panel for this slot could easily look a bit complicated; however, it is designed to be pretty user-friendly. The trick is to take your time and remember that all choices can be changed between spins. This guide is here to provide a few hints and tips to anyone who needs help navigating this space in space! All information here refers to the game being played in fun mode.

Let’s start from the top and work down:

  1. Click the small ‘i’ in a circle to reveal details of the payouts and paylines. 
  2. Next to the ‘i’ is a speaker symbol. This controls both the background and in-play sounds and is a straightforward on/off choice that applies to both
  3. Underneath the reels, both the current credit level and any wins gained from the latest spin are displayed to the far left.
  4. To set up your bet size per spin, simply click the plus and minus buttons on the bet and coin value icons. There is a max button if you prefer to go straight for the maximum bet.
  5. The autospin icon sits directly to the right of the spin button. Pre-set options of 10, 50 or 100 are on offer; alternatively, if you want the reels to spin indefinitely, there is a fourth button to get this going. Considering the sizeable gaps between the existing set limits, this could be a useful option. Always remember to play responsibly.

Bet sizes & paytable wins 

There are two buttons to use when setting up your ideal bet size: the coin value, which ranges from 0.02 to 1.00, and the bet level, which has various options between 10 and 100.

Let’s take a look at the largest payouts, which are awarded for matching five symbols on a winning payline on any spin and are expressed as a multiple of your stake:

  • Gold double bar = 250x
  • Lucky red 7 = 120x
  • Purple crystal = 60x
  • Green crystal = 50x
  • Orange crystal = 40x
  • Light blue/yellow crystal = 25x

Ultimate Crystal expanding wilds

The multicoloured wild symbol appears on reels two, three and four and can substitute for all other symbols. You only need one to activate the feature and see it expand on the entire reel it lands on; even better, it stays this way while the remaining reels respin. Up to two more respins are possible if another wild appears. 

Ultimate Crystal review: our verdict

This is the kind of slot that people either really like or actively avoid, which is probably inevitable considering that it is definitely not a cookie-cutter game. In our opinion, it has plenty to offer when you are in the mood for something fairly low-key with a bit of a twist.

Playing free slots is a great way to enjoy everything a game has to offer without risking your hard-earned cash. It is also a good opportunity to check out or practise an online video slot with no commitment.

If crystals have caught your imagination, you should give Crystal Sun slot a try. In addition to the obvious, it features several other planets and opens up a whole new galaxy of possibilities. We especially like the 4,000x line bet prize ceiling.

Disclaimer: Ultimate Crystal trademark / license is owned by Kajot. This site is not endorsed by Kajot.

* 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: Ultimate Crystal
Software: Kajot
RTP: 95.00%
Paylines: 10
Reels: 5
Min Bet (all lines covered): £1.00 (GBP)
Max Bet: £100 (GBP)
Top Win: 500
Features: Wild Symbol, Expanding Wilds, Respins, 5 Reels, Stacked Symbols
UK Available in GB? Game is not available in GB.


What is the RTP of Ultimate Crystal?

This slot has a return to player rate of 95 per cent.

How volatile is Ultimate Crystal?

This is a slot classed as having medium volatility.

What is the biggest win available on Ultimate Crystal?

250x your wager is the top win possible during regular play.

Does Ultimate Crystal have a free spins bonus round?

Sort of, as wild wins trigger a respin. This can be retriggered up to twice if players get lucky.

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