Rating: 1

Rainbrew Online Slot

Updated: June 4, 2021 7:19

Bonus Type:
Paylines / Reels: between 243 and 1,125 ways to win / 5 reels, but additional reels can be triggered
Wager Range: 0.10 - 100
Potential maximum win: Up to 136, 035 coins
RTP: 96.02%
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Rainbrew is a video slot from Microgaming that is based around a leprechaun brewery. It has a unique reel set up, it usually has 5 reels for most of the game but when certain conditions are triggered 3 reels above and below the gameboard can be opened up to make Rainbrew highly exciting.


  • The extra reels mean that more ways to win are opened up
  • During the free spins mode the extra reels are always in play
  • Additional scatter symbols awards increasing numbers of free spins


  • Triggering the free spins mode is very difficult

Gameplay, Playability and Volatility

Microgaming have put together an innovative video slot with Rainbrew. The game itself starts with 5 reels and 243 ways to win. As the game moves forward then additional reels and more ways to win will be opened up. The opening up of new reels within the game is called the sidewinder feature.

Sidewinder feature

There are two special wild symbols that appear while playing Rainbrew. The top wild, which appears on the second reel, and the bottom wild, which appears on the fourth reel. When each wild appears on the reels it will open up extra reels to play with. If both wilds appear then the top and bottom reels will be opened, if only one wild appears then only one extra reel will be opened. If both reels are opened then the ways to win increases to 1,125 but if only one set of reels are opened then the ways to win is increased to 576.

Free Spins

The free spins feature is triggered when 3 or 4 scatter symbols land on the reels at once. If 3 land on the reels then 6 free spins are awarded and if 4 land on the reels then 10 free spins are awarded. During the free spins mode any additional scatters that land on the reels awards an extra free spin. The top and bottom extra reels are opened the entire time during the free spins mode. In addition to this if a wild symbol lands on both the top and bottom extra reel opposite each other it creates a stacked wild across all of the reels.


Rainbrew is a medium volatility game. This means that wins come along quite regularly, but they are neither very high or very low generally speaking.

RTP, Wagers and payouts

Rainbrew has an RTP of 96.02% which is in line with the market average.

The maximum wager of $100 means that high bankroll players will be comfortable when playing Rainbrew. The minimum wager of $0.10 also means that low budget players can also experience the same level of comfort. The maximum payout is up to 136, 035 coins which on a maximum wager game offers a payout of $272,070.

Rainbrew: Overall

Rainbrew is a highly innovative game that offers some very nice features. The extra reels and extra ways to win gives the game a really rewarding feel when you manage to trigger them. The free spins mode is quite hard to trigger, but it is worth it when you manage it. On the whole Rainbrew is a highly enjoyable game. 4/5

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