Slot Machine Features

On this page you can test a variety of online slots for free, categorized by their unique gameplay features. The most popular bonus mechanics you’ll find in these slots include megaways, buy bonus, sticky wilds, cascading/tumbling wins, expanding wilds and more.

Game features in Undefeated Xerxes slot

How to use this page

If a particular feature catches your interest – say megaways slots – browse to that category to try slots specifically built around it. By filtering slots this way, you can jump right into the special features that matter most for your preferences. To do so just click the red button under feature category that you like. So feel free to explore and find your favorites.

On-Demand Bonus Feature

“On-Demand Bonus” category contains free online slots allowing instant access to features. Our games let players directly buy and activate rewards like free spins, prize picks, mini-games more and give user control over timing of bonuses instead of passive reliance on random triggers. Injects additional agency beyond reel spinning. Titles from developers understand players want active gameplay, not waiting hopefully for chance features.

“Buy Bonus” functionality enables summoning extras on-demand. Category provides exciting dimension of control and customization by streamlining player-determined activation of special slot features.

27 paylines, 3 reels, 5,000X max pay,
Pragmatic Play

32,768 paylines, 5 reels, 20,000X max pay,
AvatarUX

Scatter Pays, 7 reels, 5,000X max pay, Pragmatic Play

1,024 paylines, 5 reels, 14,000X max pay,
Pragmatic Play

Connected paylines, 6 reels, 25,000X max pay,
Elk Studios

108 paylines, 5 reels, 16,480X max pay,
NoLimit City

14 paylines, 5 reels, 10,000X max pay,
Hacksaw Gaming

243 paylines, 5 reels, 5,000X max pay,
Zitro Gaming

5 paylines, 3 reels, 5,000X max pay,
Fugaso

Sticky Wilds Slots

20 paylines, 5 reels, 5,000X max pay,
NetEnt

30 paylines, 5 reels, 5,000X max pay, Playtech

Scatter Pays, 6 reels, 1,108X max pay,
Powderkeg Studios

Scatter pays (6x8 grid), 1332X max pay,  NetEnt 

10 paylines, 5 reels, 1,621X max pay,
Playtech

40 paylines, 5 reels, 1,000X max pay,
Playtech

Reels:Paylines: 20 Max Payout: 10,000x Vendor: Pragmatic Play

Cluster pays paylines, 9 reels, 2,500X max pay,
Playtech

Reels: 6 Paylines: 15 Max Payout: 15,000x Vendor: Pragmatic Play

Sticky Wilds refer to specialized wilds in certain online slots staying fixed in place for multiple spins, unlike standard wilds applicable only one spin.

Sticky wilds are a type of wild symbol that, after initially substituting for standard symbols to enable winning combinations, remain fixed in place for subsequent spins. As the reels continue spinning around the stationary sticky wild, the wild facilitates winning symbol combinations over consecutive spins, greatly increasing the probability of accumulating major wins, bonuses, and jackpots during the sticky spins. The duration of sticky wilds varies from 2-3 spins to 10+ bonus spins or indefinitely.

Their extended presence builds suspense and allows for an extended opportunity to accrue sizable payouts over multiple plays.

Megaway slots

5 reels, 2000X - max pay
Realtime Gaming

Megaways paylines, 6 reels, 30,000X max pay,
Red Tiger Gaming

Up to 117,649 paylines, 6 reels, 19,894X max pay,
Red Tiger Gaming

30 paylines, 5 reels, 5,000X max pay, Playtech

117,649 paylines, 6 reels, 10,000X max pay,
Pragmatic Play

144 paylines, 5 reels, 5,000X max pay,
Pragmatic Play

117,649 paylines, 6 reels, 10,000X max pay,  Pragmatic Play

Reels: 6 Paylines: Up to 117,649 Max Payout: 10,000x
Vendor: Pragmatic Play

Up to 12,348 paylines, 5 reels, 5000X max pay, Playtech

Megaways slots feature game selections utilizing the groundbreaking Megaways mechanic. This system represents a major innovation in slot design via its signature adjustable reel scheme. Traditional slots have fixed paylines that remain the same, but Megaways dynamically alters the number of symbols per reel with every spin. This creates thousands of possible winning combinations that are constantly changing. For example, one spin may offer 117,649 chances, the next 12,345, then 45,621, allowing for incredible variety. No two spins are identical.

This revolutionary approach pumps up slot excitement to new levels. The potential to win 100,000+ ways on any spin keeps gameplay feeling fresh and unpredictable. Frequent huge payouts are also delivered due to the abundant win potential. The site provides free demos of Megaways titles that otherwise require real money wagering at online casinos. Users can experience the heart-pounding excitement firsthand in practice mode.

Most common features in Online Slots


Here are the popular features of modern slot games that engage players and provide rewarding gameplay:

  • Progressive Jackpots – Jackpots that grow as more players make wagers. Can reach multi-million dollar payouts.
  • Special Symbols – Wilds, scatters, multipliers that trigger bonuses and payouts.
  • Bonus Games – Mini video games unlocked during play by symbol combinations. Add excitement and big payout potential.
  • Free Spins – Awarded through scatters or bonuses. Allow play without additional wagers.
  • Autoplay – Automated spin mode to speed up play.
  • Cascading Reels – Winning symbols explode and are replaced in chain reactions.
  • Retriggering – Relaunching a bonus round to extend playtime and increase payouts.
  • Pay Tables – Provide payout and gameplay details for understanding slot mechanics.
  • Volatility – Games with frequent small wins or fewer but bigger wins.
  • RTP – Indicates percentage of wagers paid back to players over time.
  • Themes – Visual themes based on entertainment brands or historical eras.

New slots to play for free

“New Slots” category contains recently added online slot machines. Section prioritizes modern games with innovative designs. Developers constantly produce new titles featuring unique concepts, features, graphics and mechanics. PlayFreeslots.info adds fresh releases to New Slots as soon as possible.

Users can discover latest themes, stories, characters, bonuses by frequently checking. Diversity reflects options from leading creators like NetEnt, Microgaming, Play’n GO and other. New additions include most popular slot features like cascading wins, cluster pays, megaways and more. New Slots provides steadily updated selection of cutting-edge, exciting games not found elsewhere on site.

27 paylines, 3 reels, 5,000X max pay,
Pragmatic Play

3456 paylines, 4-6-6-6-4 reels, 4.000X max pay, Aristocrat

Up to 117,649 paylines, 6 reels, 19,894X max pay,
Red Tiger Gaming

32,768 paylines, 5 reels, 20,000X max pay,
AvatarUX

20 paylines, 5 reels, 4,082X max pay,
Red Tiger Gaming

1,024 paylines, 5 reels, 14,000X max pay,
Pragmatic Play

30 paylines, 5 reels, 2,500X max pay,
Playtech

Scatter Pays, 7x7 reels, 10,000X max pay,
Pragmatic Play

25 paylines, 5 reels, 1,878X max pay,
LEAP Gaming

Classic Slots

20 paylines, 5 reels, Volatility: Medium, Aristocrat 

5 paylines, 3 reels, 5,000X max pay,
Fugaso

3 paylines, 3 reels, 3,000X max pay,
Playtech

1 payline, 1 reel, 10,000X max pay,
Playtech

10 paylines, 5 reels, 1,000X max pay,
Playtech

30 paylines, 5 reels, 500X max pay,
Playtech

5 paylines, 5 reels, 1,250X max pay,
Playtech

3 paylines, 3 reels, 25000X max pay, NetEnt

Reels: 5, Ways to win: 40, Max Payout: 1,500x bet, Vendor: IGT

Our Classic Slots featured games pay homage to the original vintage slot machines that pioneered the industry. These classics evoke nostalgia for the novelty and excitement of the first slot machines. They retain iconic staple symbols like cherries, bars, bells, and lucky 7s from early mechanical titles. The gameplay focuses on straightforward spinning over complex bonuses, with their retro charm and simplicity having stood the test of time.

Playing classic slots allows revisiting the genre’s roots and experiencing the magic that kickstarted the phenomenon. The games incorporate familiar fruit symbols, retro machine designs, and authentic casino floor sound effects to amplify nostalgia. They also utilize modern upgrades like smooth graphics and animations to supplement the vintage vibe. This provides a fusion of classic slot traditions with contemporary innovations.

New classic slot releases are continuously added from leading developers. Free play on the site transports users back to the glory days of pioneering slots while enjoying the advantages of modern technology. These timeless favorites provide a nostalgia trip that evokes the enduring novelty and allure that started it all.

Jackpots slots

The Jackpot Slots category on PlayFreeslots provides free access to two thrilling types of jackpot slot games that offer the chance to win substantial prize pools. Jackpot slots have become very popular in online casinos thanks to the allure of their massive payout potential.

Standalone jackpot slots feature a fixed jackpot amount that remains constant. This predetermined prize sum does not change regardless of gameplay, so the jackpot value stays static. While the potential win may be large, it does not increase over time like progressive jackpots.

Progressive jackpot slots are where the jackpot prize starts small but progressively grows bigger as more people play. A tiny portion of every bet placed goes towards the jackpot pool, causing it to steadily rise to astronomical sums. Some progressive slots have reached jackpot totals in the millions from prolonged gameplay.

Up to 117,649 paylines, 6 reels, 19,894X max pay,
Red Tiger Gaming

4608 paylines, 5 reels, 500X max pay,
Playtech

243 paylines, 5 reels, 5,000X max pay,
Zitro Gaming

5 paylines, 3 reels, 5,000X max pay,
Fugaso

25 paylines, 5 reels, 1,400X max pay,
Amigo Gaming

30 paylines, 5 reels, 2,000X max pay,
Playtech

20 paylines, 5 reels, 2,000X max pay,
Playtech

40 paylines, 5 reels, 883.65X max pay,
Playtech

25 paylines, 5 reels, 2,651X max pay,
Playtech

Symbol Collection

Symbol Collection features in online slots require amassing a predetermined number of specified symbols to trigger bonuses and rewards. As players spin the reels, certain target symbols become marked for collection. Each occurrence of a marked symbol landing adds to a Symbol Collection meter. After enough specified symbols are collected in the meter, the player wins access to bonuses like free spins, prize picks, or jackpots.

For example, a slot may initiate the collection of 10 Blue Gem symbols, filling the meter one symbol at a time with each landing. Hitting 10 Blue Gem symbols completes the collection and activates the bonus feature. Other versions track high-value symbols like Diamonds, 7s, or game logos. The target symbols and required amounts vary between slots to sustain player engagement in working toward the goal.

This mechanic incentives additional spins so players can continue landing the marked symbols to complete the set and unlock the coveted prize. The changing requirements and rewards associated with symbol collection bonuses enhances the slot gaming experience.

5 paylines, 5 reels, 5,000X max pay, 
Pragmatic Play

Megaways paylines, 6 reels, 30,000X max pay,
Red Tiger Gaming

5 reels, 25 ways to win, 1225X max pay. Vendor - Quickspin

4096 paylines (All Ways), 6 reels, 5,000X max pay,
Playtech

30 paylines, 5 reels, 5,000X max pay, Playtech

12 paylines, 5 reels, 4,000X max pay,  Pragmatic Play

4096 paylines, 6 reels, 30,000X max pay,  Pragmatic Play

Scatter Pays paylines, 6 reels, 5,000X max pay,  Pragmatic Play

10 paylines, 5 reels, 1,839X max pay,  Pragmatic Play

Expanding Symbol

243 paylines, 5 reels, 1,500X max pay,
Playtech

1024 paylines, 5 reels, 3168X max pay,
BF Games

10 paylines, 5 reels, 5,000X max pay,
Blueprint Gaming

20 paylines, 5 reels, 5,000X max pay,
Pragmatic Play

243 paylines, 5 reels, 153,902x max pay,
Habanero

100 paylines, 5 reels, 3,000X max pay,
Fugaso

20 paylines, 5 reels, 3,000X max pay,
Gameart

Reels: 6 Paylines: 15 Max Payout: 15,000x Vendor: Pragmatic Play

20 paylines, 5 reels, 1,385x max pay,
Playtech

Expanding Symbols mechanic refer to specialized types in certain online slots dynamically growing to occupy entire reels when occurring, enabling massive payouts. Standard symbols typically only pay for individual landing spot. Expanding Symbols “expand” to cover all positions on their reel upon appearing.

For instance, Expanding Wild landing center reel of 3-reel game will rapidly stretch to fill reel top to bottom. Essentially turns whole reel wild, drastically increasing odds of large winning combination across all reels. Other high-value Expanding Symbols like 7s, gems or bars work same way – spanning landing reel and multiplying payout value since now counted as multiple symbol instances.

Some slots feature multiple different Expanding Symbols in same spin for extreme wins.

FAQs

What are the most common types of slot machine features

Wild Symbols: These symbols act as substitutes for other symbols, helping players form winning combinations.
Scatter Symbols: When these symbols appear, they can trigger various bonus features such as free spins or mini-games.
Free Spins: This feature allows players to spin the reels a certain number of times without placing a bet, often with additional bonuses like multipliers.
Bonus Rounds: These are special rounds within the game that offer the chance to win extra prizes or free spins.
Multipliers: Multipliers increase the amount of a player’s winnings by a specified value.
Gamble Feature: This feature allows players to gamble their winnings for a chance to double or quadruple them.

How do Scatter and Wild symbols differ in function?

Scatters activate bonuses regardless of payline positions. Wilds substitute for other symbols in payline patterns.

What is the avalanche reels feature in slot machines

The avalanche reels feature, also known as cascading or rolling reels, is a popular mechanic in slot machines. When this feature is activated, winning combinations disappear from the reels, and new symbols fall into the empty spaces, potentially creating new winning combinations. 

How do Expanding and Cascading Reels work?

Expanding reels grow symbols for bigger wins. Cascading reels explode and drop new symbols for more chances to win.

What’s better – more paylines or higher bet sizes?

More paylines give you more chances to hit winning combos, though higher bets offer bigger potential payouts, so try both approaches!

Do slots run hot and cold with winning and losing streaks?

Nope, each spin is an independent outcome, so machines don’t get hot or cold. It’s all just chance!