Expansion! Slots
Expansion! Slots plants you in a neon-lit galaxy where aliens and planetary icons line up for serious payouts. This 5-reel video slot from Betsoft mixes cinematic visuals with high-energy bonus mechanics — stacked mystery symbols, directional wilds, and a free spins round that can award up to 15 free plays. With 30 paylines and a flexible coin range, it’s built for both careful bankroll managers and players chasing big moments.
How the game works — simple reels, deep rewards
The layout is straightforward: five reels and 30 fixed paylines, with one coin per line. Choose a coin size anywhere from $0.02 up to $1 to set your stake — with all 30 lines active, the maximum bet tops out at $30. Symbols include planetary icons in bold colors (Red Planet, Blue Planet, Green Planet, Purple Planet, Brown Planet), a sparkling Star, and the Flying Saucer alongside classic A–10 card symbols. The Red Planet doubles as the scatter; land enough of those and the free spins feature triggers.
Payout rhythm is easy to follow: match symbols on active paylines to collect wins, and keep an eye on stacked mystery symbols — they can morph into matching icons to complete multiple lines at once. Directional wilds shift across reels to form unexpected connections, turning near-misses into big hits.
Bonus rounds that crank up the action
Expansion! packs features that change the board fast. The Stacked Mystery Symbols feature can drop large stacks that reveal as the same symbol, creating sudden multiplier-worthy combinations across multiple paylines. Directional Wilds move after they land, sliding into position to bridge clusters and push a win over the top.
The Free Spins Feature, activated by Red Planet scatters, awards up to 15 free spins — during this round the mechanics often amplify, giving more room for stacked symbols and moving wilds to produce sizable payouts. If you want instant access to bonus rounds, the Buy Feature lets you purchase a direct entry to the bonus action for a price; use it when you’re chasing a high-variance run or testing a strategy in a live-money session.
Want more cosmic action? Try Arrival Slots for another alien-themed ride Arrival Slots. To learn about the studio behind the visuals and mechanics, check the Betsoft developer page Betsoft.
Smart play tips — play smart, chase wins wisely
Manage your coin size to control volatility: start small ($0.02–$0.08) while learning how stacked mysteries and directional wilds behave, then scale up once you see feature frequency. Because the game uses one coin per line, increasing coin size is the simplest way to raise your stake without changing the hit structure. If your bankroll allows, testing the Buy Feature in short bursts can be an efficient way to reach bonus rounds and assess their payout potential, but reserve larger purchases for when promotions are boosting bonus returns.
Balance risk and patience: aim for sessions where you can absorb several bonus cycles, because the biggest combos come when multiple features converge. If you enjoy similar mechanics, you might also like Back To Venus Back To Venus Slots.
Wrap-up that leaves you ready to spin
Expansion! Slots combines cinematic space styling with features that repeatedly reshape the reels — stacked mysteries, sliding wilds, and up to 15 free spins give every spin the potential to surprise. With coin sizes ranging from $0.02 to $1 and a clear $30 max bet, it’s easy to tailor sessions to your playstyle. Promotions and bonus windows can change quickly, so if a time-limited boost appears, act quickly to make the most of it and send your next session into orbit. Explore the game and see how those planets line up for you.