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Rainbrew slot from Microgaming

Rainbrew slot from Microgaming
In 2018 Microgaming (in collaboration with JustForTheWin studio) decided there weren’t enough Irish Luck games on the market so they developed one more with the ever so popular Leprechaun in the spotlight. We advise you to try the Thunderstruck Wild Lightning slot by Microgaming for free.

They didn’t bungle the Rainbrew slot machine but delivered a top-notch novelty that deserves appreciation for its originality, despite the run-of-the-mill theme. It is well known that Leprechauns have a lot of vices. They are so vain (only a green velvet topcoat will do for them); they love their alcoholic beverages and tobacco and surely have some other bad habits. You can call them anything but stingy. These Rainbrew Leprechauns also love to spread their fortune, and if you are lucky, you can walk away after a session with them loaded with plenty of Irish coins.

The main attraction of this non-standard slot is the unusual layout, which consists of five regular vertical reels and two horizontal reels which only contain Wilds in the regular spins. When all reels are activated, the win ways are increased from 243 to 1125, which guarantees some massive wins up to the max of 136 050 coins. You might be fooled by the tranquil Celtic guitar music and relaxing colours, but this slot is as thrilling as only an exceptional Medium Volatility game can be. With an RTP of 96.02%, the uncommon Rainbrew slot machine can be both a remarkable pastime and a source of extra cash.

Check it out for free in the DEMO version on our site. No registration is needed.

Personal testers’ opinion

  • We love this cleverly crafted slot. Besides the exclusive and resourceful blue and green Wild tubes (the developers labelled it as a sidewinder), Rainbrew also suffices our many requests: quality video and audio, truly payable features, and a possibility to be played with a variety of bet sizes, without changing its behaviour.
  • The paytable might look cheap, but you will see it is pretty much in sync with the 243 to 1125 win ways once you play. Unfortunately, due to the low hit frequency (under 30%), the slot delivers good rewards only so often that is not enough to keep the balance in long sessions. That makes it unsuitable for bonus money wagering. Our wagering scale proves it, too - assigning 4.01 index points (out of 10). You can get large wins (55x -85x the total bet) easily even in the base game, which not many medium variance slots can brag with. The waiting for the Free Spins is standardly extended - statistically, after 132 spins, you should expect the bonus round.
  • The rainbow tavern seems appropriate for low-rollers enjoyment (as even in rounds with 0.10 and 0.20 cents, the slot demonstrates its capability for balance increase). The tap-house is proper for high-rollers' actions, too (as they can employ their wealth to raise the stake a little - to 7.50 - 8 CAD, and certainly log loftier wins).
  • All traits considered: we do recommend sessions with real money here, as the Rainbrew slot machine has proven its ability for sizeable payouts, and because it is well-liked among many Microgaming fans (i.e. regularly in a hot mood, and the common pool - ready to grant you a slice of the prize). However, the machine is usually unfit for completing the bonus requirements.

Hidden parameters of the slot (data from the testing team)

  • The frequency of triggering the bonus is statistically, every 132nd spin (0,76%).
  • The distribution of the winnings is 70% in the usual spins and 30% in the bonus feature.
  • The maximum payout during the tests was 298x.
  • The average winning from the bonus was 28x.
  • Volatility is 6,02 out of 20 (average).
  • Cycle length is average.
  • The rating of the slot machine for the wagering is 4,01 out of 10.
  • RTP of 96,02% allows getting a positive mathematical expectation at the casino.


3 Wild symbols - regular, top, and bottom Wilds all replace the other symbols, except the Free Spins symbol.

  • The multi-coloured Wild only lands on the horizontal lines.
  • The Blue Top Wild lands only on the 2nd reel or the lower horizontal reel in the main game.
  • The Green Bottom Wild only appears on the 4th reel or the upper horizontal reel in the main game.

Sidewinder Feature - In the base game, only the vertical reels spin until The Blue Top Wild lands and activates the upper horizontal reel or the Green Bottom Wild lands and brings the lower horizontal line to life. The number of win ways increases to 576 or 1125.

Free Spins - The Rainbrew Free Spins Scatters appears only on the 2nd and 4th reel, and when they do,
6 Free Spins (for 3 Scatters) or 10 Free Spins (for 4 Scatters) are awarded, and both horizontal reels will light up and join the game. So now there are 1125 win lines, and on the upper and lower reels, only Wilds and Free Spins Scatters appear. When Wild symbols land in the same position on the top and bottom reel, the vertical reel in between them will turn completely Wild.


  • All 5 ornamental tokens - 0.4x/0.8x/2x the total bet
  • Smoking Pipe - 0.8x/1.5x/4x the total bet
  • Bier mug - 1x/2x/5x the total bet
  • Tub with fuse - 1.2x/ 3x/6x the total bet
  • Lady Rainbrew Leprechaun - 1.5x/4x/7x the total bet
  • Mr. Rainbrew Leprechaun - 2x/5x/8x the total bet


  • The RTP (return to player percentage) is equal to 96.02%.
  • Pay lines are 243, 576 or 1125 ways.
  • The range of the bets is from 0.10 to 100 coins.
  • The max winning is 136 035 coins.
  • Bonuses are the free spins feature, the horizontal lines, 3 wild symbols and the Sidewinder Feature.

Where to play?

  • Play Rainbrew slot at the best gambling site in Canada - Fastpay Casino. They offer over 5300 casino slot games as well as instant and no-hassle payouts. After the first deposit, you will become part of their VIP bonus program for loyal players that has 11 levels. Each level will bring new and outstanding prizes for you.

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Written by Kamen Valev
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