Sinkhole is a Medusa slot on Stake Engine with 96.00% RTP and a 50,000× max win. Play the Sinkhole demo free above with play money — no deposit and no account needed. It has 6 ways to play, from the base game up to feature feast at 1k× your bet, and each one's exact odds are broken down below. For real money, Sinkhole is available at Stake.
Every way to play
6 modes · tap one to explore its odds
Cheapest route to the 50,000× max: Extra Chance (3×) — about 6.0M× your bet staked per hit on average, vs 27M× on feature mystery (500×).
Base game
Base game · 1× your bet per spin · A normal spin at 1× your bet.
Odds explorer
Pick a payout and read the exact chance, straight from Engine's provably-fair outcome table.
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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Sinkhole demo — questions
- Can I play the Sinkhole demo for free?
- Yes. The Sinkhole 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 Sinkhole?
- Sinkhole has an RTP of 96.00%, which means it pays back that share of every amount staked over the long run.
- What is the max win on Sinkhole?
- The max win on Sinkhole is 50,000× your bet. The most likely way to land it is Extra Chance (3× per round), where it hits about 1 in 2,000,000 rounds.
- Does Sinkhole have a bonus buy?
- Yes — Sinkhole has 4 buy options: Feature Normal at 100× your bet; Feature Super at 500× your bet; Feature Mystery at 500× your bet; Feature Feast at 1k× your bet.
- How often does Sinkhole pay?
- In the base game, 12.9% of spins pay back more than they cost and 52.5% pay nothing. These figures come from the full outcome table, not a simulation.
- Who makes Sinkhole?
- Sinkhole is made by Medusa and was released on Oct 17, 2026. It is published on Stake Engine, so its outcome tables are provably fair.
- Where can I play Sinkhole for real money?
- Sinkhole is available for real money at Stake. Use the "Play at" button on this page to open it at the casino you prefer.