Black Coffee Studios

Grease Monkey demo

Free play · no deposit · no sign-upOct 31, 2026

RTP
96.50%
Max win
20,000×
Ways to play
8
Max-win odds
1 in 33
Play at Stake

Grease Monkey is a Black Coffee Studios slot on Stake Engine with 96.50% RTP and a 20,000× max win. Play the Grease Monkey demo free above with play money — no deposit and no account needed. It has 8 ways to play, from the base game up to crackedout at 1k× your bet, and each one's exact odds are broken down below. For real money, Grease Monkey is available at Stake.

Every way to play

8 modes · tap one to explore its odds

Cheapest route to the 20,000× max: Crackedout (1k×) — about 33,000× your bet staked per hit on average, vs 4.4M× on bonus hunt (3×).

Base game

Base game · 1× your bet per spin · A normal spin at 1× your bet.

RTP
96.50%
Max win
20,000×
In profit
11.4%
Pays nothing
74.0%

Odds explorer

Pick a payout and read the exact chance, straight from Engine's provably-fair outcome table.

Reading the outcome tables…

Demos use play money. Maths computed by circus.fyi from Engine's published provably-fair tables — every outcome a mode can produce and how often, nothing sampled.

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Grease Monkey demo — questions

Can I play the Grease Monkey demo for free?
Yes. The Grease Monkey demo on circus.fyi runs the real game from Stake Engine with play money, so you can try every feature without a deposit or an account.
What is the RTP of Grease Monkey?
Grease Monkey has an RTP of 96.50%, which means it pays back that share of every amount staked over the long run.
What is the max win on Grease Monkey?
The max win on Grease Monkey is 20,000× your bet. The most likely way to land it is Crackedout (1k× per round), where it hits about 1 in 33 rounds.
Does Grease Monkey have a bonus buy?
Yes — Grease Monkey has 5 buy options: Feature at 500× your bet; Regular at 100× your bet; Super bonus at 250× your bet; Mystery at 500× your bet; Crackedout at 1k× your bet.
How often does Grease Monkey pay?
In the base game, 11.4% of spins pay back more than they cost and 74.0% pay nothing. These figures come from the full outcome table, not a simulation.
Who makes Grease Monkey?
Grease Monkey is made by Black Coffee Studios and was released on Oct 31, 2026. It is published on Stake Engine, so its outcome tables are provably fair.
Where can I play Grease Monkey for real money?
Grease Monkey is available for real money at Stake. Use the "Play at" button on this page to open it at the casino you prefer.