Microgaming · Medium volatility
The record-breaking African safari slot famous for life-changing progressive jackpots. Here's the trade-off behind the headlines.
Updated June 2026 · tested by our review team
Mega Moolah (Microgaming, 88.12% RTP, medium volatility, Progressive jackpot (millions) max win) is available off GamStop at non-UK casinos. Read our full verdict, the game's real stats and a breakdown of how its features pay below.
| Developer | Microgaming |
|---|---|
| RTP | 88.12% (base RTP; progressive jackpot lifts effective return) |
| Volatility | Medium |
| Max win | Progressive jackpot (millions) |
| Reels / layout | 5×3, 25 paylines |
| Min / max bet | £0.25 — £6.25 per spin |
| Features | Four-tier progressive jackpot wheel, free spins with 3x multiplier |
| Released | 2006 |
Our verdict
Mega Moolah is the most famous progressive jackpot slot ever made, holder of multiple record online payouts. The base game is a simple 5×3, 25-line safari slot with a free-spins round that triples wins — pleasant but unremarkable on its own.
Everything orbits the randomly triggered Jackpot Wheel, where you spin for one of four tiers topped by the seven-figure Mega pot. The catch is the low 88.12% base RTP — a chunk of every bet feeds the progressive — so you're effectively trading day-to-day value for a tiny shot at a fortune.
High-ceiling games reward patience, not chasing. Whatever you play, set a budget first and stake at a level your bankroll can absorb. New to these sites? Start with our slots not on GamStop guide or our non UK casino reviews.
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FAQ
Yes — Mega Moolah is available at casinos licensed outside the UK that are not part of the GamStop network, so a GamStop self-exclusion will not block access. However, if you self-excluded because of gambling harm, we strongly recommend you keep that exclusion and seek support from GamCare rather than seeking out non-UK sites.
The default RTP of Mega Moolah is 88.12% (base RTP; progressive jackpot lifts effective return). It is always worth checking the game's information panel before you play, as some operators run lower-RTP builds of the same game.
Mega Moolah is a medium-volatility slot — a balance between how often it pays and how much, making it a steadier option than the high-variance games on our list.
Mega Moolah's 88.12% base RTP is low because a significant share of every wager is diverted to fund the progressive jackpot pool. The published figure excludes jackpot contributions, so the effective long-term return is higher — but you're trading regular-win value for a small chance at a very large prize.