Slotmill · Mad science

Dr. Brainfart

17 November 2026 · in 16 days · very-high

15 000×max win

Over 10,000 spins at €1, the 94.08% version costs about €199 more than the 96.07% version. See the maths →

Mechanics

• Avalanche
• Progressive win multiplier
• Xcelerate
• Giant symbols
• Free Spins
• Super Free Spins
• Multiplier Lock

What we know

Slotmill was a one-entry studio in this catalogue, and Dr. Brainfart doubles it. Dated 17 November, with every field the studio keeps filled in: a 96.07% return, a second build at 94.08%, a 15,000x ceiling, Very High variance, a six-by-six avalanche grid where eight matching symbols pay from any position, and stakes from 0.20 to 100.

Two rungs, which is this studio's own pattern - Wild Bison Stampede, the other Slotmill entry here, reads 96.01% and 94.03%. Both drop almost exactly two points, and both are labelled "Variant 1" and "Variant 2" rather than named for a market. What the second build is for is not stated anywhere; only that it exists.

The mechanic worth explaining is Xcelerate. A progressive multiplier doubles on every cascading win, and an Xcelerate symbol landing inside a win removes one of the upcoming multiplier steps. So it does not add a multiplier - it shortens the path to the next one, which is a neater idea than most studios manage with the same components. Giant symbols of 2x2 and 3x3 count as four or nine symbols, Super Free Spins guarantee one on every spin, and a Multiplier Lock can carry a multiplier into the bonus as its starting value.

Not stated: the hit rate, the buy price, and whether entry can be bought at all.

Sources

• Slotmill - official game page (RTP Variant 1/2, Volatilitaet, Max Win, Raster, Einsatz, Termin)