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Brains And Beakers

Expanding wilds, escalating beakers, and a Hold & Win Rip Spin.

▶ Play free demo on Stake.us

Play on Stake.us (Sweeps)

RTP

95.92–96.20%

Max Win

5,000x / 10,000x

5,000x in other modes — 10,000x in Rip Spins

Volatility

Selectable (Low / High)

Layout

5x5, 15 lines

About

A mad-science 5x5 slot where expanding wild columns stack multipliers and a Brains/Beakers toggle lets you choose your volatility. Land scatters to enter tiered free spins, or jump straight to the lab with Rip Spin Hold & Win and Double Drop features.

Expanding Wilds (column-filling, sticky in free spins)
Stacking wild multipliers (2x–50x, summed across a line)
Brains/Beakers volatility toggle

Features

Tiered Scatter Free Spins

3, 4, or 5 scatters all award 10 free spins, but more scatters mean guaranteed expanding wilds and a higher multiplier floor.

Rip Spin (Hold & Win)

A bonus feature with 3–5 lives where prize symbols stick and reset your lives. Reaches the 10,000x max win.

Double Drop

Guarantees two expanding wild columns drop on a single spin, with scatters still able to trigger free spins.

Bonus Boost & Bonus Buys

Boosted-frequency feature modes plus Regular, Super, and Mystery bonus buys for direct entry into free spins.

Stats

On Stake Engine

From Stake Engine’s public game catalogue.

Published RTP

95.92–96.20%

Ranges by game mode

Outcomes published

2.6M

Every result the game can give, with its odds

Anyone can check them: Stake Engine’s Provably Fair page ↗