Twisted Lab
Twisted Lab is a Hacksaw Gaming slot featuring Mr. Melker and Pat the Rat in a laboratory, played on 5 reels and 5 rows with 19 winning lines. The RotoGrid symbol rotates the whole grid by 90 degrees, and Oozing Beakers spill wild ooze when it does. Three FS scatters trigger the Unleash the Ooze bonus with 10 free spins, and a second bonus uses Twisters and a Collector symbol.
RTP published by the studio / Twisted Lab
96.3%
Scale starts at 95% · other versions not published
Figures: Hacksaw Gaming demo game, Hacksaw Gaming game page, checked September 30, 2026; each value is linked to its page in the game facts table. Artwork © Hacksaw Gaming; image file from the Slots-Info slot database, not supplied by the studio.
15,000×
Max win, × stake
1
RTP version published · others not published
Yes
Bonus buy
Game facts
| Metric | Value |
|---|---|
| Studio | Hacksaw Gaming1 |
| RTP versions | 96.3%2 |
| Other RTP versions | Not published by the studio |
| Volatility | Not published |
| Max win | 15,000× stake2 |
| Bet range | €0.10 – €501 |
| Layout | 5x5 · 19 paylines1 |
| Features | RotoGrid, Oozing Beakers, Unleash The Ooze!, The Twist Of The Twisted!1 |
| Bonus buy | Yes2 |
| Release date | Not published by the studio |
Numbers link each value to the page it comes from. “Not published” means the studio does not state it; we add it when it does and never estimate a spec. Figures from casino sites are not used.
RTP versions
Hacksaw Gaming publishes one RTP setting for Twisted Lab: 96.3%. Other RTP versions are not published by the studio. Check the game’s help or paytable screen at your casino to see which version it runs.
| RTP version | House edge | Return per $100, long run | vs highest |
|---|---|---|---|
| 96.3% (highest) | 3.70% | $96.30 | — |
House edge = 100% minus RTP. RTP is a long-run average across all players, not a prediction for a session.
Features
- RotoGrid
- Oozing Beakers
- Unleash The Ooze!
- The Twist Of The Twisted!
Where it’s available
Not confirmed. Availability in regulated North American markets is not confirmed yet.
Regulated markets only; availability varies by casino.
