The Invaders from the Planet Moolah slot machine is a WMS (now Light & Wonder) video slot built on 25 fixed paylines, medium volatility, and a widely cited RTP of 96.00%. It's one of the more distinctive titles on licensed US online casino platforms, mainly because of the cascading-reels mechanic that drives its free-spins bonus.
What kind of slot machine is Invaders from the Planet Moolah?
The game runs on a standard 5-reel grid. Paylines are fixed at 25 — no adjusting them up or down. The theme is intentionally campy: alien cows invading a farm. The barn symbol pays 250 credits for five of a kind. The scatter (trailer) pays 15 credits for three, 40 credits for four, and 200 credits for five.
The standout mechanic is cascading reels. When a winning combo lands, a laser zaps those symbols off the grid and new symbols fall in from above. That chain can keep going on a single paid spin, which is exactly how the free-spins bonus gets triggered. See how the Planet Moolah Invasion Feature free spins actually trigger for a step-by-step breakdown.
What is the RTP and volatility on this slot machine?
The most commonly cited figure is 96.00%. That said, AskGamblers lists 92.97% and other sources land at 94.1% and 95%. Those gaps aren't typos — different operators license different software configurations. Before you deposit, check which version your casino runs. The full story is in the Invaders from the Planet Moolah RTP — why four sources give different numbers guide.
Volatility is medium. Wins come at a moderate clip rather than the long dry spells you'd see on a high-variance title. The maximum payout on the standard game is 2,500 coins, with SlotsUp calculating a maximum win exposure of $93,750 at top bet levels. The max win multiplier is 750× your bet.
Where can you play Invaders from the Planet Moolah for real money?
Real-money online play is confirmed at invaders from the planet moolah BetMGM casino, Tropicana NJ, invaders from the planet moolah Caesars online casino, and Bally Casino. Legal states are New Jersey, Pennsylvania, Michigan, and West Virginia. You must be physically inside one of those states when you play — geolocation software enforces it, not just account registration.
Minimum age is 21+ at all four licensed operators. Also worth knowing: some casinos flag this game as ineligible for welcome-bonus wagering. Read the fine print before you claim any offer. More detail at bonus term warnings for Planet Moolah.
How does the free-spins bonus trigger?
Four consecutive cascade wins in a single spin sequence launch the Invasion Feature. That awards 7 free spins. Retriggering is possible, and the total can stack up to 50 free spins in one run. No scatter symbol needed — it's all about chaining those cascades.
Original vs. the sequel
If you've seen Invaders Attack from the Planet Moolah at a land-based casino, note that it's a different machine — higher volatility, variable paylines (5–50), and a max payout of 3,750 coins. There's no confirmed US real-money online version of the sequel as of this writing. Full comparison at Invaders Attack from the Planet Moolah online — how it differs from the original, and a broader look at all variants is on the Invaders from the Planet Moolah slot versions compared page.
State availability details — including which operators are live where — are at which states let you play Planet Moolah for real money.
Must be 21+. Gambling problem? Call 1-800-GAMBLER or reach the National Council on Problem Gambling 24/7.