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Welcome to our slots glossary page! Here you will find helpful explanations and examples for common slots terminology. Understanding these key slot machine words and phrases will allow you to approach slots with more confidence. Learn what paylines and reels are, how symbols and multipliers work, why bonus rounds and free spins are valuable, and more. With key definitions for slot machine features like wilds, scatters, hit frequency, volatility, RTP, and more, this gambling glossary serves as a useful guide to slots gameplay, statistics, and components. Refer back any time you need a quick refresher on core slot concepts.

Slots Terminology

243 Ways – Slots that pay out for any 3 consecutive symbols from left to right without fixed paylines. Wins are based on adjacent symbol combinations instead of aligned paylines. Seen in hits like Mighty Drum slot from RTG.

3D slots – Cinematic slots that use advanced 3D graphics and animations to provide an immersive, next-level gameplay experience. Often based on movie or video game franchises. Popular titles include Jumanji game from NetEnt.

Autoplay – A feature that allows automatic spins based on parameters set by the player like number of spins or win amount. Used to automate gameplay during bonus features or when AFK.

Avalanche reels – A slot feature where winning symbols explode and disappear while symbols fall down from above to replace them, allowing for consecutive reaction wins when new combinations land. Provides cascading excitement. Also referred to as Cascading Wins or Tumble feature. Seen in popular games like Fresh Crus Slot, Gonzo’s Quest, and Reactoonz 2.

Avalanche reels

Bonus round – A secondary slot game activated by certain symbols that provides extra ways to win prizes, free spins, multipliers, and jackpots. Adds variety and excitement to gameplay. Can be triggered in games like Gonzo’s Quest slot.

Buy feature – An option in some slots to purchase access to bonus rounds like free spins for an additional wager. Buying access guarantees you’ll get to play these rewarding bonus features.

Buy Bonus feature in Slots

Cascading reels – Game feature where winning slot symbols disappear and are instantly replaced by new symbols falling down from above, allowing consecutive wins when new combinations land. Provides action-packed excitement. Popular in games like Gonzo’s Quest.

Classic Slots

Classic slots – Straightforward slot machines modeled after vintage land-based slots with 3 reels and 1 payline. Feature classic and nostalgic symbols like fruits, bells, bars, and 7s. Includes popular titles like Fruit Shop Slot by NetEnt.

Demo Slots – Trial play versions of real money slots that replicate the real game. Demo slots have no financial risk and allow players to test slots with play money for practice. Demos fully immerse players with gameplay features, graphics, sounds, bonuses, and paytables of the real slots allowing players to try before they buy.

Expanding wilds – Special wild symbols in slots that can expand to cover an entire reel when landing, opening up more payline combination possibilities for bigger wins. Seen in popular games like megahit Starburst slot.

Free SlotsSlot machine games that allow players to spin the reels without betting or depositing real money. Free slots function identically to real money slots, but do not require bets or have payouts. They offer risk-free entertainment and a way to preview real money slots. Here at we offer popular free slot titles include Big Bass Bonanza, The Invisible Man, and Twilight Princess.

Free spins – Rounds in slots that spin automatically without deducting money from a player’s balance, allowing risk-free chances to win bonuses and jackpots. Awarded as bonus rewards. Provide excitement without cost.

High roller slots – Slot games with higher maximum bet sizes tailored specifically for VIP, high stakes players. Allow bets in the hundreds or thousands per spin. Popular titles include Dead or Alive 2.

Hit frequency – The percentage of slot spins that result in a winning symbol combination versus non-winning spins. A 10% hit frequency means on average, 1 out of every 10 spins will pay out.

i-slots – A unique interactive slot series with evolving storylines and decision-making that impacts bonuses. Adds an engaging twist and player involvement not seen in typical slots. Created by Rival Gaming.

Jackpot slots – Slot machines that are linked to pooled progressive jackpots or have local in-game jackpots. Progressive jackpots can climb into the millions before one lucky player wins. Popular games include Buffalo Mania slot.

Lines – The number of paylines a slot game has crossing the reels. Matching symbols must align on lines to win. More lines mean more winning opportunities each spin.

Max bet – The largest single bet allowed in a slot, typically enabling access to the biggest prizes, jackpots, and bonus features when the max is wagered. Usually multiple coins on all lines. A typical slot game limits the size of betting to 100 – 200 USD.

Megaways – A slot mechanism with an adjustable number of symbols per reel, leading to tens of thousands of ways to win. Provides a dynamic and different experience with every spin. Pioneered by Big Time Gaming.

Multiplier – A slot feature that increases payouts by a set amount, usually 2x, 3x, or more times the original winning amount. Bigger wins are rewarded when multipliers apply.

Multiway slots – Slot games that pay out for matching symbol combinations in multiple patterns, not just left to right payline wins. Opens up more ways to win. Seen in popular slots like Fortunium.

Nudge feature – A feature that allows players to shift reels up or down slightly to complete winning payline combinations using an on-screen nudge button. Dates back to vintage “nudge” slots.

Payback percentage – The theoretical average percentage of wagered money a slot machine is programmed to pay back to players in winnings over time. Higher payback equals better odds. Ranges from 80% to 99%.

Payline – The specific path on a slot machine where matching symbols must line up in order to win prizes. More paylines mean more ways to form winning combinations each spin.

Paytable – A display in slots that shows payouts for different symbol combinations based on the player’s current bet size. Helps identify the most valuable symbols.

Penny slots – Low cost slot games that allow wagers for as little as 1 cent per payline, appealing to players on a budget. Still include exciting features like free spins. Popular titles include Double Diamond.

Pick me bonus – A bonus round in slots where players pick from a selection of hidden objects on screen to instantly reveal prizes like credit awards, multipliers, or free spins. Adds player interaction.

Progressive jackpot – A jackpot prize in slots that grows over time with a small portion of every bet feeding it. Can climb to millions before one lucky player wins it. Seen in games like Holmes and the Stolen Stones.

Random number generator (RNG) – The software that ensures every slot spin outcome is truly random by continuously and randomly generating new combinations of numbers that correspond to reel results. Keeps gameplay fair.

Reels – The vertical spinning wheels on a slot machine that display a series of symbols players spin in hopes of landing winning combinations across paylines. Most classic slots have 3 reels, while video slots have 5+ reels.

Respins – Free slot spins that re-trigger while holding certain reels fixed in place to maintain or improve symbol positions for bigger wins. Allows players to re-spin select reels. Seen in popular slots like Starburst XXXtreme

Scatter symbol – A special symbol in slots that triggers payouts when landing anywhere on the reels, even if not perfectly aligned on a payline. Scatters reward wins more frequently.

Slot machine – An electronic gambling machine featuring spinning reels with symbols that randomly align on paylines to form winning combinations in exchange for money bets. Includes slots, fruit machines and poker machines.

Slot provider – The company that designs, develops and supplies slot games and cabinets to online and land-based casinos. Major slot providers create hundreds of unique game titles and series, each with distinct themes, graphics, features and mechanics. Leading providers include IGT, Aristocrat, NetEnt, Microgaming and Playtech known for popular slots like Wheel of Fortune, Buffalo, Starburst, Mega Moolah and Age of the Gods.

Stacked symbols – Identical slot symbols that appear stacked on top of one another on reels, increasing the chance of aligning or hitting winning payline combinations and bigger payouts.

Sticky wilds – Wild symbols in slots that remain on the reels for subsequent respins during a bonus round or feature. Help generate more winning symbol combos across multiple spins.

Symbols – The fun themed icons on the spinning reels of slot machines that form winning combinations when aligned on active paylines. Common examples include fruits, gems, bells, bars, and lucky 7s.

Tumbling reels – A slot feature where symbols fall vertically from the top of reels with winning symbols exploding and being replaced by symbols tumbling down from above for potential consecutive reaction wins. Provides cascading excitement. Seen in games like Gemhalla slot.

Video slots Modern 5+ reel slot games that incorporate advanced video graphics, animations, bonus features and sound effects for an engaging gameplay experience. Top titles include such games like Aztec Magic Bonanza.

Volatility – The risk profile of a slot measuring how frequently it pays out wins and the average size of the payouts. Higher volatility slots pay out less often but provide bigger wins. Lower volatility pays more often with smaller wins.

Wheel of fortune – A prize wheel that is spun in a bonus round, segment landing determines the random prize award. Adds fun, anticipation and unpredictability to slots. Used in games like Wheel of Wishes.

Wild symbol – A special symbol in slots that can substitute for other standard symbols to help complete winning combinations across paylines. Makes it easier to form winning lines.