Bonus Games and Free Spins: What They Are and How They Work

If you've played slot machines online even once, then you've already heard about bonus rounds and free spins. These are two of the central features in today's slots and, together with their numerous variants, among the most sought-after by players worldwide. After all, they provide an opportunity to win additional prizes and, naturally, increase your bankroll. The majority of US players also look for free play bonuses, which are a handy way of experiencing games for free but still retaining the excitement of real rewards.

Then what is the difference between bonus rounds and free spins, and how do they work in gameplay? Let's break it down.

What Is a Bonus Round?

A bonus round is an off-game mode that is triggered when a particular pattern of symbols lands on the reels. You usually need three or more scatter symbols (independent special characters that do not have paylines) to activate the bonus.

Bonus rounds come in several forms, which include:

Prize wheels that feature multipliers
Mini-games in the "pick and click" format
Themed video sequences that give out cash prizes
Mazes with doors or chests to choose from
Interactive visits to game places

Each bonus game is distinct and depends on the theme and mechanics of the specific slot. But all of them offer a chance to win extra awards, double your payoffs, or even win the jackpot.

What Are Free Spins?

Free spins are essentially free reel spins. They enable players to spin the slot without using real money, but retain the chance of winning real rewards. The number of free spins can be from a few to dozens, depending on the game's and casino's generosity.

Types of Bonus Rounds in Online Slots

Game developers are never resting when it comes to imagination, thinking up new types of bonus features. Some have been classics already, but others leave us stunned with new ideas.

Several of the most popular types of bonus rounds are:

Pick and Click – the players pick items on the screen (symbol, doors, boxes), that have a cash reward or a multiplier.
Wheel of Fortune – a prize wheel divided into sections with different multipliers. The player "spins" the wheel and is granted the reward that corresponds to it.
Card Bonuses – the game features one or several cards to choose from, each displaying bonus characteristics like added free spins, monetary rewards, or multipliers.
Multi-level Bonuses – the player goes through several levels of the bonus round, with increasing challenge and compensation in each level.
Gamble Features – a classic bonus in which winnings are doubled by predicting the color or suit of a hidden card. Losing is rewarded by forfeiting the prize.

Of course, there are hundreds of implementations – boss fights, treasure hunts, or even mini-slots in the main game. All that depends on the developer's imagination and technical capabilities of the game engine.

How to Obtain Free Spins in Online Slots

Free spins are perhaps the most sought-after bonus offered in online slots. Who wouldn't want to spin for free but get real money in return? So how do you obtain them?

These are some of the most popular methods:

As an in-game bonus round. Certain slots give free spins upon landing specific symbols or getting a mini-game completed.
As an online casino deposit bonus. Free spins are usually offered by most operators as a reward for funding or as a welcome gift for new customers.
As tournament or raffle prizes. Free spins are usually the reward in casino-promoted competitions.
Through loyalty schemes. Players that fund and gamble regularly can be rewarded with free spins.
As birthday promotions, holiday promotions, or VIP rewards. Free spins for birthdays or holidays, or as VIP club rewards, are offered by some casinos.

To prevent missing opportunities for free spin promotions, keep an eye on the promotions of your favorite US online casinos.

The Role of Bonuses and Free Spins in Slots

Free spins and bonus rounds are an important part of online slots. They accomplish two things. First, they mix up the game by introducing elements of surprise and interaction. Second, they give players more chances to win with less risk.

In fact, free spins and bonuses serve several functions:

Entertainment – they enhance the enjoyment and appeal of the game.
Motivation – the potential for winning valuable rewards encourages players to bet higher and play longer.
Psychology – surprises that evoke good feelings and make players return.
Marketing – bonuses for free attract new players and retain existing ones.
Financial – winnings from bonus games and free spins can significantly increase a player's bankroll and overall win.

Mathematically, free spins and bonus rounds both play a role in altering the RTP (Return to Player)of a slot. The RTP of the majority of new slots ranges between 95% and 97%, but including bonus features within it can reach as high as 99% or even higher.