Slot Bonus Rounds Explained: How They Trigger

A slot bonus round is a separate part of the game, with its own rules, that starts when a set trigger lands during a normal spin in the base game. The most common trigger is a number of scatter symbols on one spin, but games also use collected symbols, special reel positions or a random trigger. Once the round starts, the game switches to a different mode, such as a set of feature spins, a pick-and-reveal screen or a wheel, plays it out at the bet size that triggered it and then returns you to the base game. This guide explains how triggers work, the common round types and what changes inside the round.

Base game vs bonus round

Base game: the normal spin. You set a bet, press spin and each spin is settled on its own.
Bonus round: a mode the base game hands over to. It has its own reels or screen, its own rules and usually its own win tally that is paid when the round ends.
Bet size: the round normally plays at the bet you had on the spin that triggered it. You cannot change the bet inside the round.

How bonus rounds trigger

Scatter count. A set number of scatter symbols, often three or more anywhere on the reels, starts the round. Scatters do not need to sit on a payline.
Special symbols on set reels. Some games need a bonus symbol on specific reels, for example reels 1, 3 and 5 on the same spin.
Collection or meter. Symbols collected over many spins fill a meter; when it is full, the round starts.
Random trigger. The game can start a feature on any spin, with no visible symbol pattern.

The game's info page shows which trigger it uses and how many symbols are needed. The chance of a trigger is fixed by the game's maths: past spins, the time of day or the bet pattern you used do not make it closer.

Common bonus round types

Feature spins: a set number of spins played at no extra cost to your balance, often with an added rule such as a multiplier, extra wilds or reels that grow. Landing the trigger again inside the round can add more spins (a retrigger).
Pick-and-reveal: you choose tiles or objects on a separate screen to reveal prizes until the round ends.
Wheel bonus: a wheel is spun and the segment it stops on decides the prize or the next feature.
Respin features: certain symbols lock in place while the other positions respin a set number of times.

Wild symbols often play a bigger part inside these rounds; what is a wild symbol explains how wilds substitute and expand.

Triggered round vs Bonus Buy

Some games let you pay a set multiple of your bet to start the bonus round straight away instead of waiting for a trigger. That option is covered in what is bonus buy in slots. A round reached through a natural trigger costs nothing beyond your normal spins.

What to check on the info page

Trigger rule: which symbols, how many and on which reels.
Round rules: number of feature spins, multipliers and whether retriggers are possible.
Maximum win: many games cap the total win of a round or a spin.
RTP: part of a slot's RTP comes from its bonus round, which is why a game can pay little in the base game and more in the feature.

Bonus rounds on Go2win

Go2win's online slots come from 31 providers, including PP, PG, JILI, HACKSAW and RELAX, and each game describes its own bonus round on its info page. New to slots? Start with how to play online slots, then open a Go2win account with your +60 number and a password. New members get RM18 on sign-up.

For the full lobby of slots, live casino and sports in one MYR account, start from the Go2win online casino Malaysia page.

FAQ

What is a bonus round in a slot?

A bonus round in a slot is a separate feature with its own rules that starts when a set trigger, such as enough scatter symbols, lands in the base game. The game then switches to a mode such as feature spins, a pick-and-reveal screen or a wheel, and returns you to the base game afterwards.

How do you trigger a slot bonus round?

You trigger a slot bonus round by landing the game's set trigger, usually a number of scatters on one spin, often three or more anywhere on the reels. Some games use bonus symbols on set reels, a collection meter or a random trigger instead. The info page shows the rule and how many symbols are needed.

Can I change my bet during a bonus round?

No, you usually cannot change your bet during a bonus round. The round plays at the bet size of the spin that triggered it, and its own win tally is usually paid when the round ends. The game then returns you to the base game, where you set a bet and press spin as normal.

Is there a way to trigger bonus rounds more often?

No, there is no way to trigger bonus rounds more often. The trigger chance is set by the game's maths and does not change with past spins, the time of day or the bet pattern you used. Bonus Buy, where a game offers it, skips the trigger at a set multiple of your bet instead.