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Spectra is a colorful slot machine produced by the Swedish slot manufacture Thunderkick. They have finally speeded up their slot productions, and they have delivered several slots the last couple of months. Spectra has 30 paylines and is played on a 5x4 reel set. Spectra reminds me of NetEnt's Starburst in many ways, it has many of the same color combinations, and it also has a similar wild and re-spin feature, even though it's not 100% the same feature. The maximal win per spin is 600x, but because of the re-spin possibilities, the maximal win per game round is 2.400x the stake per spin. This win is highly theoretical as you will need to line up several max wins during the re-spins to win it. The payout percentage for this game is listed to be 96.20% in the game, but if you take a look at the slot sheet Thunderkick provides on their home page, the RTP is listed to be 96.40%. 96.40% is the correct number!

Game data

Slot name



Release date


Free spins

Bonus game


Spectra Thunderkick 96.40% 2016-09-07 30




This slot machine is available on these casino platforms:
Computer, Mac, iPad, iPhone and other mobile devices.

18+ required - New customers only - BeGambleAware - T&C apply!


Read more about the game features below the screenshot!

Game screenshot

Game features

After giving Spectra a few spins it might confuse you a bit, as the previous wins will show on the left and the right side of the game. I think this is a pretty cool feature, but it's nothing you need to think about. It only shows the previous wins, and it will not affect anything with the game play. I can also mention that wild symbols that lands just outside of the reels, might nudge into the reels. This might also be a little confusing, but after a few game rounds this should be easy to understand.

Spectra has wild symbols that are stacked 4 and 4 symbols on all the 5 reels. These symbols substitute for all other symbols in play, and a full screen of wild symbols would pay 600x the stake per full screen combination. The wild symbols will also nudge if they appear on the reels or in a position over or under them. The wilds will then nudge one position towards filling the reel with wilds, and then activate a re-spin. If additional wilds appear, and additional nudge will be rewarded, and so will an additional re-spin.

Re-spins: The re-spin feature is activated if one or more wild symbols appear on the reels or in a position over or under them. The wild symbol will then nudge one position towards filling the reel with wilds and stick to the reel, while a re-spin is awarded. If additional wilds appear during the re-spin, all wilds will nudge one more position towards filling the reels, and an additional re-spin is awarded. As long as more wild symbols appear, they will continue to nudge one position each towards filling the reel, unless they have filled the reel already, then they work as sticky wilds for the remaining re-spins. The re-spins are finished when no more wild symbols appears.

Casino to play at / Provider

Spectra is created by Thunderkick.
Read more about Thunderkick!

18+ required - New customers only - BeGambleAware - T&C apply!


18+ required - New customers only - BeGambleAware - T&C apply!

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