How to play Double Rainbow

Double Rainbow, developed by Hacksaw Gaming, is a 7x7 grid slot that uses a cluster pays mechanic. Unlike traditional paylines, wins form when groups of 5 or more matching symbols connect horizontally or vertically. The game incorporates a cascading feature, where winning clusters are removed and new symbols drop in for additional wins.

How to Play

Set your bet: Choose your stake, ranging from €0.20 to €100, using the game controls.
Spin the reels: Initiate a spin on the 7x7 grid to start the round.
Form clusters: Wins occur when 5 or more matching symbols land in a cluster, connected either horizontally or vertically.
Watch the cascades: Winning clusters disappear, and new symbols fall into their place, allowing for consecutive wins within a single spin.
Trigger Rainbow Spins: Land 3 or more Rainbow Spin symbols anywhere on the reels to activate the bonus round.

Key Mechanics

Rainbow Spins: This bonus round features a 3-spin “hold & respin” style counter. The counter resets to 3 whenever a new symbol lands, extending the feature.
Rainbow Spin symbol: These act as scatters; landing 3 or more of them triggers the Rainbow Spins bonus.
Reel Multipliers: Positioned above each unlocked reel, these multipliers are applied to any cluster wins occurring on that reel. Stars can increase their values, up to 250x per reel.
Rainbow Symbols: These colored cloud symbols change reel colors, activating and unlocking reels, and contributing to the reel multipliers.
Heart symbol: During Rainbow Spins, landing a Heart symbol adds +1 to the remaining spin count, resetting it to 3 if it was lower.
Star symbol: These symbols increase the value of the active reel multipliers.
Bomb symbol: Landing a Bomb symbol during Rainbow Spins collects all rainbow values currently visible on the reels.
Double Rainbow feature: This is activated when all reels are unlocked, representing the highest win potential within the game.

Bonus Rounds

Yellow Rainbow Spins (80x stake): Buying this bonus awards 3 Rainbow Spins with 1 random reel unlocked and 1 reel multiplier active from the start.
Green Rainbow Spins (150x stake): Buying this bonus awards 3 Rainbow Spins with 2 random reels unlocked and 2 reel multipliers active from the start.
Blue Rainbow Spins (250x stake): Buying this bonus awards 3 Rainbow Spins with 3 random reels unlocked and 3 reel multipliers active from the start.
Purple Rainbow Spins (375x stake): Buying this bonus awards 3 Rainbow Spins with all 7 reels unlocked and up to 7 reel multipliers active from the start.

What is the RTP of Double Rainbow?

Double Rainbow has multiple RTP settings, including 96.38%, 94.23%, 92.33%, and 88.25%. The specific RTP in play depends on the casino's configuration, on US social casinos.

What is the volatility of Double Rainbow?

Double Rainbow has medium volatility, rated 4/6 by the provider, for US social casino play.

What is the max win on Double Rainbow?

Double Rainbow has a max win of 5,000x your stake on sweepstakes casinos.

How many paylines does Double Rainbow have?

Double Rainbow uses a cluster pays mechanic, paying on groups of matching symbols rather than fixed lines.

What is the hit rate of Double Rainbow?

Double Rainbow has a 39% hit rate on US social casinos.

Does Double Rainbow have free demos?

No, Double Rainbow is not available in demo mode on US-facing social casinos.

Does Double Rainbow have free spins?

No, Double Rainbow does not include in-game free spins for US social casino play. However, Acebet.cc's welcome bonus includes a 20 free spins option that can be used on Double Rainbow.

Does Double Rainbow have bonus games?

Yes, Double Rainbow lists Bonus Rounds and Bonus Buy in its feature set in the US release. The game's bonus round, called Rainbow Spins, is a hold-and-respin style feature triggered by landing 3 or more Rainbow Spin symbols. Within the Rainbow Spins, a 3-spin counter resets whenever a new symbol lands, allowing for continuous play as reel multipliers increase and new reels unlock. Players can also purchase entry into four different bonus tiers at costs ranging from 80x to 375x your stake, each offering a different number of starting unlocked reels and multipliers.

Does Double Rainbow have an in-game jackpot?

No, Double Rainbow does not include a jackpot feature on sweepstakes casinos.

How does Double Rainbow's Rainbow Spins with reel multipliers and color-changing rainbow modifiers work?

Double Rainbow's Rainbow Spins with reel multipliers and color-changing rainbow modifiers feature a 3-spin counter that resets each time a new symbol lands, extending the bonus round. Reel Multipliers, which can reach up to 250x, are assigned above reels and increase with Star symbols, applying to winning clusters on those reels. Rainbow Symbols unlock new reels and influence these multipliers, creating a dynamic progression on US social casinos.

Does Acebet.cc offer a no-deposit bonus for Double Rainbow?

Yes, Acebet.cc's social casino no deposit bonus is one of two welcome package options for new players, both available on Double Rainbow. New players can claim SC 1.00 in free Sweeps Coins with no deposit required, using code ACEBET, paired with a 100% deposit match up to SC 1,000.00. Alternatively, new players can claim 20 free spins paired with a 100% deposit match up to SC 1,000.00. The choice between the two is made at signup.

What is a good strategy for Double Rainbow?

Double Rainbow's 39% hit rate pairs with medium volatility to produce a base-game tempo where value can be found both in regular cluster cascades and in the feature. Players can choose from four Bonus Buy options, from the 80x Yellow Rainbow Spins with limited starting multipliers to the more aggressive 375x Purple Rainbow Spins, which unlocks all 7 reels and multipliers from the start. This allows players to adjust their entry point based on desired risk, on US social casinos.