- RTP
- Return to player — the theoretical percentage of all wagers a game returns over an enormous number of spins. It describes the long run, never your session.
- Volatility
- How returns are distributed over time. Low volatility pays small and often; high volatility pays rarely and large. Same RTP, completely different ride.
- Wild
- A substitute symbol that stands in for regular symbols to complete a win. Expanding wilds cover a whole reel; sticky wilds stay locked for the next spin.
- Scatter
- Pays regardless of position and usually triggers the free-spins round. Three scatters is the common trigger; some games let you retrigger inside the feature.
- Cascade / Tumble
- Winning symbols are removed and replaced by new ones falling in, allowing chained wins from a single paid spin. Standard on cluster-pay fruit titles.
- Multiplier
- Multiplies a win by a stated factor. Progressive multipliers climb with each cascade; global multipliers apply to the whole spin.
- Payways
- Adjacency-based paying instead of fixed lines — 243, 1,024 or a variable count. More ways generally means more small wins and a higher bet per spin.
- Hold & Win
- Coin symbols lock in place and grant respins, which reset each time a new coin lands. Fill the grid and you collect the top tier.
- Free Spins
- A bonus round played without deducting from your balance, usually with an enhanced mechanic — extra wilds, higher multipliers or expanded reels.
- Feature Buy
- Optional direct purchase of the bonus round, typically costing fifty to a hundred times your stake. Convenience, not value — treat it as one very expensive spin.
- Max Win
- The capped maximum payout expressed as a multiple of your stake. A 5,000x cap means the game stops paying at 5,000 times the spin cost, however the maths lands.
- Wagering Contribution
- The percentage of a bet that counts toward clearing a bonus rollover. Slots normally contribute at the highest rate, which is why bonuses pair naturally with them.