Eager Beavers: Slot Overview
Swedish studio Thunderkick has turned to one of nature’s hardest-working animals for its online slot, Eager Beavers. Known for powerful teeth and an obsession with dam building, the beavers headline a game that similarly revolves around “building” — specifically, expanding reel height and dramatically increasing the number of ways to win. As you try to stack things up, watch for the Cash Bonus Game, a coin-style prize round packed with value symbols and a handful of special symbols it can unleash when it’s in a nasty mood.
Since beavers are closely tied to watery habitats, Thunderkick sets Eager Beavers in a bright forest scene where water spills down a tall wooden pole framework. If you’ve ever asked why beavers build dams, one reason is to form deeper water that helps protect them from predators. They live in lodges within ponds that are accessed via underwater entrances, which helps keep them out of reach of wolves and bears. Smart creatures.

Eager Beavers is also a smartly put-together slot, featuring a 6-reel setup where the game randomly drops 2, 3, 4, or 5 symbols onto each reel every spin. That means the initial ways to win range from 64 to 7,776. Thanks to the expanding mechanic, though, if every reel reaches maximum height, then 1,000,000 ways to win come into play. That’s a huge spread, and a highly volatile math model dictates how the gameplay develops. RTP is set at 94.29%, and the available stake range runs from 10 c on the lowest side up to $/€100 at the top end.
Jack, Queen, King and Ace kick off the paytable, followed by 4 gem-like fruits and then 4 beaver character symbols. Landing 6 matching royals pays 0.4x the bet, fruit symbols return up to 0.5x the bet, and 6 OAK beaver wins award 1 to 5 times the bet. Wilds replace any standard pay symbol, and a 6-wild win pays 5x the bet.
Eager Beavers: Slot Features

The core pay flow in Eager Beavers works like this: wins are formed by matching symbols across at least 3 adjacent reels. Any winning symbols are removed and replaced with new ones, and an extra symbol is added to the top of each reel that took part in the win. Reels may expand to a maximum of 10 positions high. The sequence repeats for as long as fresh wins keep landing.
Special Wild Features
If a Special Wild feature symbol appears in a winning way, it triggers its corresponding Special Wild feature – Either the Wild Splash feature m which is represented by a fish, or the Wild Fall feature is represented by a log. Special Wild features do not impact scatters, wilds, or other Special Wilds:
- Wild Splash – selects one symbol currently on the screen at random and turns every instance of it into wilds.
- Wild Fall – drops a random number of wilds into the reels. Wilds may land as single symbols or as stacked wilds.
Wild Rapids
This feature activates randomly, adding a random number of wild symbols to the top of one or more reels. Wilds can land individually or in stacks.
Cash Bonus Game
Hitting 3 scatter symbols starts the Cash Bonus Game. Once triggered, the standard reels are swapped for special reels that can land Cash Value symbols worth 1x to 100x the bet or Collect, Super Collect, Upgrade, Super Upgrade, Build, and Super Build symbols. Symbols drop into every open reel position:
- The Collect symbol gathers all Cash Value symbols on the reel it lands on, while the Super Collect gathers all Cash Collect symbols across all reels. Collected Cash Value symbols are cleared from the grid so additional symbols can drop in.
- The Upgrade symbol boosts all Cash Value symbols on its reel by x2, x3, x4, or x5, while the Super Upgrade applies one of those multiplier values to all Cash Value symbols on all reels.
- The Build symbol raises the height of its reel by a random number of empty spaces, while the Super Build increases the height of every reel in the same way. The maximum reel height is 10.
Buy Feature
Players can purchase the Cash Bonus Game for 100 times their bet. The RTP when buying the feature is 94.46%.
Bet+
The Bet+ offers three options, with RTP values ranging from 94.35 % to 94.44%.
- Bonus Boost – 1.3x the bet, each spin is 2 times more likely to trigger the bonus game.
- Bonus Boost Plus – 2.2x the bet, each spin is 5 times more likely to trigger the bonus game.
- Bonus Boost Ultra – 3.5 the bet, each spin is 10 times more likely to trigger the bonus game.

Eager Beavers: Slot Verdict
The phrase “busy as a beaver” is meant for someone who works quickly and relentlessly to get things done. Ironically, Eager Beavers often feels like the reverse of that. Dead spins showed up frequently, and so did small wins that didn’t really lead anywhere. Every now and then, you’d hit a satisfying chain of repeat wins that added extra positions to the winning reels and widened the play area, but those moments didn’t come around that often. To be fair, Bet+ exists to help push the pace. Still, it didn’t take long to understand why the math model is labelled “high,” and to feel a bit wary of it.
The bonus rounds could be irritating too. It’s difficult to think back on bought rounds that finished in profit. Many features seemed to shower the screen with 1x or 2x coins, with maybe a 5x appearing at best. The special symbols didn’t land particularly often, and when they did, they frequently felt underwhelming — like a Collect landing on a reel with a lone 1x, or a Build adding a few extra spaces only to fill them with 1x coins. Even a bonus that expanded to 80+ positions still ended as a 94x the bet payout. That’s a negative sample and others will obviously do better, but next to ELK Studios’ beaver slot, Dam Beavers, Eager Beavers didn’t make the losing feel as entertaining. Or the winning, either.
Still, there’s a 10,000x the stake max win, and the game clearly has upside thanks to its enormous ways count and the tools the bonus round can potentially unleash. So yes, Eager Beavers has the technical firepower to go off, and the beaver theme is undeniably charming — just be ready for a tough grind if you’re trying to break through this dam.
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ProviderThunderkick
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RTP94.29%
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VolatilityHigh
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Reels6
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Rows10
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Paylines1,000,000
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Min/Max Bet0.10/100
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Max Win10,000x
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Release DateAugust 21, 2024