Keystone Studios · Game sheet · Demo available
Enter the experiment. Try not to become part of it.
A 5×4, 1,024-ways slot where Mutation Wilds fuse into bigger multipliers and the Lab Assistant bags glowing Specimen Jars for cash.
- Grid
- 5×4
- Ways
- 1,024
- RTP
- 96%
01 / The experiment
Unstable wilds. Bottled cash. A lab on the edge.
01
1,024 ways
Wins form across five reels and four visible rows, with 1,024 possible ways through the laboratory.
02
Mutation Wilds
Wilds land with a mutation level of ×2, ×3 or ×5. Wilds that touch fuse and level up, and multipliers on the same way multiply together.
03
Specimen Collect
Specimen Jars carry cash values. When the Lab Assistant lands on reel 5 he bags every jar on screen, boosted by the highest Mutation Wild in view.
04
Free Spins
Land Scatters to break into the Free Spins experiment, where the lab really loses containment.
02 / The specimens
A laboratory with a life of its own.
A rogue scientist, his loyal Lab Assistant, improbable creatures and fluorescent compounds turn the reels into a bright, unruly monster workshop.
03 / Game specification
Monster Mix-Up at a glance.
The free demo is available now. The Stake release follows submission.
- Reel layout
- 5 reels × 4 visible rows
- Pay system
- 1,024 ways
- RTP
- 96%
- Maximum win
- 50,000×
- Features
- Mutation Wilds, Specimen Collect, Free Spins
- Volatility
- Medium-high
- Theme
- Mad science and monsters
- Platform
- HTML5
- Technology
- Stonecraft by Keystone Studios
- Demo
- Available now
04 / Questions
Inside the lab.
What is Monster Mix-Up?
Monster Mix-Up is a 5×4, 1,024-ways slot from Keystone Studios with fusing Mutation Wilds, Specimen Collect and a Free Spins bonus.
How does Monster Mix-Up play?
Wins pay across 1,024 ways. Mutation Wilds carry multipliers and fuse when they touch. The Lab Assistant collects Specimen Jar cash values, and Scatters trigger Free Spins.
What are the RTP and maximum win?
Monster Mix-Up returns 96% and pays up to 50,000×.
Can I play the demo now?
The free demo is available now. It uses virtual credits only. There is no Stake link yet.
05 / Work with us
Bring Monster Mix-Up to your players.
The free demo is live. Speak to Keystone Studios about distribution. There is no public Stake link yet.