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Retro Reels: Extreme Heat slot from Microgaming

Retro Reels: Extreme Heat slot from Microgaming
A hat-trick, that’s what the developers at Microgaming were going for when they released the third installment of their Retro Reels series. Retro Reels: Extreme Heat slot machine turned out to be just slightly more successful than its two predecessors, and the reason may be that they decided to include a Wild in the gameplay. It is the same Dollar Sign from the previous two slots (expectably on fire this time) and besides replacing almost all other symbols, it pays 10 000 coins.

Inevitably the Sevens and Bars are present (in all 3 versions) and vintage fruits are on the plate too. Free Spins are also on the menu, but for most people, the Re-spin feature is extremely compelling and an essential draw for this modernized old-line slot. This opportunity to Re-spin any independent reel after a losing spin is living proof that hope dies last. It is up to your common sense to operate with it wisely. Whichever way you use it, it is definitely exhilarating and keeps you at the edge of your seat every spin.

With a max win of 440 000 coins, Medium Volatility, and an RTP of 97.5%, the Retro Reels: Extreme Heat slot machine is a great addition to the range of retro slots out there. Try it for free via the DEMO link on our page. No download and compulsory registration.

Personal testers’ opinion

The Extreme Heat slot is traditional with familiar charm, and yet with plenty of quirks to only be called an old-school machine. In fact, all 3 slots in the Retro reels series are like triplets with tiny differences for those who care. We love all of them equally, because of the 3 “R” -s we care about:

  • R-etro (we appreciate everything from the previous slots era);
  • R-espin (we are always pleased to find this feature, no matter costly, when utilized smartly can bring exactly the right result),
  • R-ewarding (what is more important than the financial success you had in playing slots?)

From the triplets, this slot presents itself highest in the slot rank. The overall Extreme Heat stats are amazing. The RTP of 97.5% - one of the highest in the industry, the hit frequency is also lofty - 48% - another plus for the game, and let’s not forget the 440 000 coins promised by Microgaming - a big motivator to go back in time and to give in to your nostalgic mood. In the base game, we attained a max win of 48x the total bet, and in Free Spins 21x the total bet on average. Not all that great, but all our test sessions end up positive, which cannot be said for many other medium variance veteran games.

The balance was well preserved even for longer sessions, and occasionally, when the instinct told us, we used the Re-spin function. We tried not to get carried away, after all the warnings we read about this diabolical feature leading layers of a downward spiral. Statistically, the Free Spins are triggered every 96th spin - yet another upside of this slot. Come to think of it, if you are into retro slots, this is one sophisticated such machine, which will surprise you fairly, in every way! It’s also suitable for completing the bonus requirements with a wagering index of 5.3 (out of 10).

Hidden parameters of Retro Reels: Extreme Heat slot (data from testing)

  • The frequency of triggering the bonus is statistically, every 96th spin (1.04%).
  • The probability of a hit (any winning) is 47,49%.
  • The distribution of the winnings is 72% in the main game and 28% in the bonus feature.
  • The maximum payout during the tests was 48x.
  • The average winning from the bonus was 21x.
  • Volatility is 5,36 out of 20 (average).
  • Cycle length is average.
  • The rating of the slot machine for the wagering is 5.3 out of 10.
  • RTP of 97.5% allows getting a positive mathematical expectation at the casino.


  • Wild Dollar Sign on Fire – This is the only one of 3 Retro Reels slots where a Wild is thrown in the mix. It substitutes for all symbols, except the Free Spins Scatter, plus it’s the most valuable: 10 000x coins for 5OAK.
  • Re-spin feature – Choose any one reel to be re-spun after a losing spin. This comes at a cost, naturally. The greater the chance at a big win, the higher the price to re-spin the reel of your choice. Nothing’s guaranteed, so make sure to don’t go overboard and let it spin out of control.
  • Free Spins – Landing 3, 4 or 5 Free Spins Scatters will get you 10, 15, and 20 Free Spins respectively. All wins are doubled and the spins are re-trigger-able.


  • Provider - Microgaming company
  • The number of reels is 5
  • Pay lines are 30
  • The cost of one coin is from 0.01 to 0.25
  • The number of coins per line is from 1 to 15
  • The range of bet sizes is from 0.01 to 112.50
  • Maximum winning for a spin is x10,000 (five Wild symbols)
  • Maximum winning in the bonus is 440 000 coins (during free spins)
  • Wild symbol - yes (Dollar sign on fire)
  • Scatters - yes (inscription Free Spins on fire)
  • Free spins - yes (three or five scatters symbols will give 10, 15, and 20 free spins with a multiplier x2)
  • The expected percentage of payments in the slot is 97.5% which allows you to increase your welfare and win a lot of money.

Where to play?

  • The best place in Canada to launch Retro Reels: Extreme Heat slot for free or real money is Fastpay Casino. They offer over 5300 casino slot games as well as super-fast and no-hassle withdrawals. You will be pleased with their bonus program and a VIP bonus program for all loyal players.

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Written by Kamen Valev
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