Play 3 Lucky Rainbows Action Boost SpinUP

Some slots reveal their main idea within a few spins, and that was certainly the case here. Before long, we found ourselves paying more attention to the various coin symbols than the regular line wins because almost every special feature revolves around collecting them in one way or another. Whether they trigger Rainbow Spins, award upgrades, unlock jackpots, or activate one of the Action Boost SpinUP modes, the coins drive most of the activity throughout the game. 

3 Lucky Rainbows Action Boost SpinUP by SpinPlay Games combines traditional paylines with several interconnected feature systems. While many online slots focus on a single bonus round, this one spreads its mechanics across different coloured coin features, Rainbow Spins, jackpot collections, expanding reels, and multiplier upgrades. The result is a game that constantly feels as though it is building towards another event rather than relying solely on standard reel wins. 

The game setting is filled with lucky charms, clovers, gold coins, and rainbows. Rather than presenting a detailed storyline, the visuals focus on symbols commonly associated with luck and treasure hunting. 

Most of the premium symbols fit naturally within the theme. Four-leaf clovers, tankards, shoes, harps, and violins appear across the reels, while rainbow Wild symbols provide the highest standard payouts. The lower-paying symbols are represented by familiar card ranks from A down to 9. 

One aspect we appreciated was how clearly the special symbols stand out. The coloured coins are immediately recognisable, making it easy to follow which feature may be triggered next. The rainbow columns displayed beside the reels also help communicate progression without making the screen feel overcrowded. Although there are several mechanics working together, the presentation remains straightforward enough to follow during longer sessions. 

The payout values below are based on a 1 total bet. 

The Wild symbol substitutes for all regular symbols except bonus symbols and appears stacked on every reel. 

Rainbow Spin Feature 

Whenever a Gold Coin appears, there is a chance that the Rainbow Spin feature will activate. Each Gold Coin is collected into the Gold Hat, and all rainbow trails become active during the feature. 

A Rainbow Spin can award bonus credit prizes, trigger upgrades, or activate one of the Action Boost SpinUP features depending on the combination of coins collected. 

Green Coin Action Boost SpinUP 

The Green Coin feature awards 10 Bonus Spins and increases the game from 20 paylines to 40 paylines. All reels expand to a height of six symbol positions. 

Any reel containing a Wild symbol is nudged so that every position on that reel becomes Wild. Additional Gold Coins collected during the feature can award prizes, Rainbow Spins, or upgrades. The feature can also receive up to two upgrades, adding more Wilds during subsequent spins. 

Red Coin Action Boost SpinUP 

Landing the Red Coin feature awards 10 Bonus Spins focused on collecting clovers linked to the jackpot system. 

Different coloured clovers contribute towards the Mini, Minor, Major, Maxi, and Mega jackpots. Gold Coins can also award additional clovers, bonus prizes, jackpot boosts, Rainbow Spins, or feature upgrades. Upgrades reduce the number of clovers required to complete jackpot collections. 

Purple Coin Action Boost SpinUP 

The Purple Coin feature also begins with 10 Bonus Spins but focuses on multipliers rather than jackpots. 

The starting multiplier is 2x. One upgrade increases the multiplier to 3x, while two upgrades increase it to 5x. Line wins and bonus credit prizes are multiplied by the active multiplier throughout the feature. 

Multiple Coin Action Boost SpinUP 

When multiple coin types trigger together, all Action Boost SpinUP features become active within the same Bonus Spins round. 

The multiplier from the Purple Coin feature applies to qualifying wins and bonus prizes, while additional upgrades awarded during the feature add two extra spins each time they are collected. 

3 Lucky Rainbows Action Boost SpinUP uses a 5x4 reel layout with 20 fixed paylines during standard play. Winning combinations are formed from left to right across adjacent reels, beginning with the leftmost reel. 

The Green Coin feature temporarily changes the layout by expanding all reels and increasing the number of active paylines to 40. This creates a noticeably different feel compared to the base game because the larger reel height allows more Wild expansion opportunities. 

Much of the gameplay revolves around collecting Gold Coins and coloured coin symbols. Gold Coins interact with the Rainbow Spin system, while Green, Red, and Purple Coins determine which Action Boost SpinUP feature is awarded. Because the various mechanics feed into one another, feature rounds often have several possible outcomes rather than following a single fixed sequence. 

• Action Boost 3 Lucky Rainbows uses a similar Irish-inspired theme alongside coin collection mechanics and rainbow-based feature triggers. 
• 3 Lucky Rainbows Action Boost Max expands on the Lucky Rainbows formula with additional enhancement mechanics and upgraded feature opportunities. 
• Area Build'R 3 Lucky Pigs combines collection-based progression with bonus rewards that develop over time as special symbols are gathered. 

We found ourselves watching the coin symbols throughout most of our session because they influence almost every important mechanic in the game. Standard wins are certainly present, but much of the anticipation comes from seeing whether Gold Coins and coloured coins arrive together at the right moment. 

The Green Coin feature stood out thanks to the expanded reels and full-reel Wild nudges, while the Red Coin round adds a longer-term jackpot collection element that gives the feature a different objective. Meanwhile, the Purple Coin option focuses on multipliers, creating another route towards stronger payouts. 

What works particularly well is how the various systems interact. Rainbow Spins can lead to upgrades, upgrades can improve existing features, and multiple coin combinations can activate several mechanics at once. Despite that level of activity, we never felt lost because the game clearly displays what each symbol contributes. Players who enjoy feature-driven online slots with several progression paths will likely find plenty to explore here.