Bonus buy slots (also called feature buy or bonus purchase slots) let players pay a fixed price to immediately trigger the free spins bonus round, bypassing the base game. The cost is typically 50–100× your bet per line. RTP during the purchased bonus is slightly higher than the base game's RTP. Bonus buy features are banned in the UK under UKGC rules — available at offshore and EU casinos.
In the UK: Bonus buy features are banned at all UKGC-licensed casinos under the Remote Gambling and Software Technical Standards (RTS). If you are playing on a UK-licensed site, the bonus buy button will not appear.
Top Bonus Buy Slots — Ranked by RTP
| Slot | Provider | RTP | Max Win | Volatility |
|---|---|---|---|---|
| Pop Royale | AvatarUX | 97.96% | 10,000× | medium |
| Forbidden Alchemy | PG Soft | 97.76% | 8,000× | high |
| Perfect Strike | PG Soft | 97.76% | 4,000× | medium |
| Candy Rush | Unknown | 97.42% | 5,000× | high |
| Big Bounty Bill | Kalamba Games | 97.33% | 5,000× | high |
| 3 Coin Wild Tiger | TaDa Gaming | 97.20% | 5,400× | medium |
| 10 Sparkling Crown 2 | TaDa Gaming | 97.16% | 10,000× | medium |
| Blazin Quinn | Wicked Games | 97.14% | 777× | low |
| Fortune Yuri 500 | TaDa Gaming | 97.10% | 12,500× | low |
| Lucky Macaw | TaDa Gaming | 97.09% | 5,000× | low |
| Clover Coins 3x3 | TaDa Gaming | 97.08% | 3,000× | low |
| Rise Of Egypt | TaDa Gaming | 97.08% | 10,000× | medium |
| X7 Hot | TaDa Gaming | 97.03% | 525× | medium |
| Bison Fortune Coins | TaDa Gaming | 97.00% | 3,000× | medium |
| Fortune Hook Antarctic | TaDa Gaming | 97.00% | 5,000× | medium |
What Are Bonus Buy Slots?
Bonus buy slots include a built-in option to directly purchase the game's free spins or bonus round, without spinning through the base game to trigger it naturally. The bonus buy button is displayed in the game UI — typically alongside the spin button. The cost is deducted immediately and the bonus round begins.
How Much Does a Bonus Buy Cost?
The standard cost is 50–100× the current bet per line. On a €1 stake, a 100× bonus buy costs €100. Some titles offer premium buy variants at 200×–500× the bet that provide enhanced bonus conditions.
| Buy type | Typical cost | What you get |
|---|---|---|
| Standard bonus buy | 50–100× bet | Standard free spins round |
| Premium bonus buy | 100–200× bet | Enhanced free spins |
| Ante bet | +25% per spin | Increased organic trigger probability |
Are Bonus Buy Slots Legal?
Bonus buy features are banned in the UK. The UKGC banned bonus buy features in April 2019 under the Remote Gambling and Software Technical Standards (RTS). Bonus buy is available at MGA-licensed casinos (Malta), Curaçao-licensed offshore casinos, and most EU-facing operators.
Strategy Tips for Bonus Buy Slots
- Check T&Cs before buying — confirm whether your active casino bonus permits bonus buy. Many operators ban it while a bonus is active.
- Size your buy relative to bankroll — bonus buy should not exceed 5–10% of total session funds per attempt.
- Prefer lower buy multipliers for more attempts — a 50× buy slot gives twice the attempts per bankroll unit compared to a 100× slot.
- Use demo mode first — most EU casinos offer demo bonus buy. Verify the feature mechanics before spending real money.
- Avoid premium buy variants — the 250× or 500× "enhanced bonus" options rarely deliver EV commensurate with their cost.
Frequently Asked Questions
What are bonus buy slots?
Bonus buy slots include a paid feature that lets players directly purchase the free spins bonus round, bypassing the base game. Cost is typically 50–100× the current bet. The feature is banned at UK-licensed casinos but available at MGA and Curaçao-licensed sites.
Are bonus buy slots legal in the UK?
No. The UKGC banned bonus buy features in April 2019. UK players must trigger free spins naturally in the base game.
What is the best bonus buy slot?
Our database ranks bonus buy slots by their published default RTP — see the table above for the current top 15. For extreme max wins, look for titles with 10,000×+ potential at very high or extreme volatility.