Gaming Vault · Slot release
Moonbase Mayhem
Moonbase Mayhem is a lunar-base cluster slot from Gaming Vault, played on a 7x7 grid with tumbling clusters, giant symbols and Probes carrying multipliers from 2x to 100x.
By the Reel Bulletin desk · Updated 9 Nov 2026
On this base on the Moon, a Toy Robot, a Jetpack and a Comet fill the grid together with a Ray Gun, a Flying Saucer and four coloured Orbs. Groups of five or more matching symbols, linked horizontally or vertically, win on the 7x7 board, then vanish so the grid can tumble. Symbols may also arrive as 2x2, 3x3 or 4x4 giants.
When two winning clusters touch, the more valuable one absorbs the other and pays as a single larger group. Probes carry multipliers from 2x to 100x and boost any cluster they touch. The alien Crew symbol unlocks the free spins: three give Moon Spins, four give Orbit Spins and five give Warp Spins, with each round treating Probes in its own way.
The base RTP is 96.01%. Normal spins cap at 5,000x, while the Signal Scanner toggle (5x, 96.08%) and the buys reach 15,000x: Armed Probe at 20x (96.03%), Moon Spins at 40x (96.01%), Orbit Spins at 100x (96.05%) and Warp Spins at 220x (96.02%). High volatility means patience is part of the deal.
Wondering how a session of Moonbase Mayhem tends to go? RTPDaily works out session odds from its sampled maths.
Every way to play
Price and top win as multiples of the bet
| Mode | Price | RTP | Top win | Top win odds |
|---|---|---|---|---|
| Normal · Base game | 1x | 96.01% | 5,000x | 1 in 19,237 |
| Signal Scanner · Feature mode | 5x | 96.08% | 15,000x | 1 in 250,421 |
| Armed Probe · Bonus buy | 20x | 96.03% | 15,000x | 1 in 125,001 |
| Moon Spins · Bonus buy | 40x | 96.01% | 15,000x | 1 in 33,334 |
| Orbit Spins · Bonus buy | 100x | 96.05% | 15,000x | 1 in 25,001 |
| Warp Spins · Bonus buy | 220x | 96.02% | 15,000x | 1 in 33,335 |
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