An encyclopedia of video slots
Slot Atlas
How do Megaways reels change shape? What does a 96% RTP really mean over a thousand spins? Slot Atlas maps the games, the studios and the maths behind them — and lets you try free demos.
Inside the atlas
Every reel, explained
A catalog to browse, a library to learn from and tools that show the numbers. Everything is for information only.
Catalog
72 slots, one honest card each
Search, filter and sort by RTP, volatility, max win, grid or mechanic. Each card lists the facts that matter and links to a free demo.
- RTP range slider and volatility filters
- Side-by-side comparison of any two slots
- Favourites and a list of slots you have studied
Learn
Mechanics, studios and the words they use
Animated step-by-step diagrams show how each mechanic works. Studio profiles tell their history and signature series. A 70-term glossary decodes the jargon.
- 8 mechanics with diagrams and maths notes
- 18 studio profiles
- 12 quizzes with badges to earn
Every day
Slot of the Day
A new game is featured every day with its story, numbers and a quick read on what makes it different. Plus the latest releases and events from the studios.
Mechanics
The eight ideas behind modern slots
MegawaysReels change height every spin, so the number of ways to win shifts from hundreds to over a hundred thousand.
Cluster PaysWins form when enough matching symbols touch each other, instead of lining up on a payline.
Hold & WinSpecial symbols lock in place and the respin counter resets each time another one lands.
Classic LinesPaths run across the reels and pay when matching symbols land on them from the left.
CascadesWinning symbols vanish and new ones fall in, so one spin can pay several times in a row.
Free SpinsScatters award spins that cost nothing and usually run with enhanced rules.
Wilds & MultipliersSubstitutes complete wins and often carry a multiplier that scales the payout.
Bonus BuyAn optional purchase at a fixed multiple of the stake starts the bonus round at once.
Tools
See the maths, not the hype
Three tools that show what the numbers on a slot really mean.
See what a run of spins looks like on paper: total wagered, expected return and a typical range.
Put two slots next to each other and see where they differ, from RTP to bonus buy.
Answer five questions and get five slots that fit the way you like to play.
Play safe. The house always has the edge.
Slot Atlas does not offer real-money gambling and does not encourage anyone to gamble. Demos use play credits only: nothing can be bought, won or cashed out.
If gaming stops being fun, free and confidential help is available around the clock.
Slot Atlas opens only in regions where online casino games are permitted. The app checks your region on first launch and shows the local rules.