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RTP
96.70%
Max win
25,000×
Ways to play
10
Max-win odds
1 in 842
Slime Siren is a Kek Studios slot on Stake Engine with 96.70% RTP and a 25,000× max win. Play the Slime Siren demo free above with play money — no deposit and no account needed. It has 10 ways to play, from the base game up to drop 256 at 1k× your bet, and each one's exact odds are broken down below. For real money, Slime Siren is available at Stake.
Every way to play
10 modes · tap one to explore its odds
Cheapest route to the 25,000× max: Absurd Spin (100×) — about 84,200× your bet staked per hit on average, vs 1.3M× on super bonus (250×).
Base game
Base game · 1× your bet per spin · A normal spin at 1× your bet.
RTP
96.70%
Max win
25,000×
In profit
4.3%
Pays nothing
88.2%
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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Slime Siren demo — questions
- Can I play the Slime Siren demo for free?
- Yes. The Slime Siren 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 Slime Siren?
- Slime Siren has an RTP of 96.70%, which means it pays back that share of every amount staked over the long run.
- What is the max win on Slime Siren?
- The max win on Slime Siren is 25,000× your bet. The most likely way to land it is Absurd Spin (100× per round), where it hits about 1 in 842 rounds.
- Does Slime Siren have a bonus buy?
- Yes — Slime Siren has 8 buy options: Super Chance at 10× your bet; Absurd Spin at 100× your bet; Drop 64 at 100× your bet; Drop 256 at 1k× your bet; Super Bonus at 250× your bet; Epic Bonus at 500× your bet; Mystery Bonus at 500× your bet; Mystery Spin at 500× your bet.
- How often does Slime Siren pay?
- In the base game, 4.3% of spins pay back more than they cost and 88.2% pay nothing. These figures come from the full outcome table, not a simulation.
- Who makes Slime Siren?
- Slime Siren is made by Kek Studios and was released on Oct 19, 2026. It is published on Stake Engine, so its outcome tables are provably fair.
- Where can I play Slime Siren for real money?
- Slime Siren is available for real money at Stake. Use the "Play at" button on this page to open it at the casino you prefer.