Bonus Buy—also called Feature Buy or Feature Purchase—lets a player pay a stated multiple of the current stake to enter a selected bonus mode without waiting for its normal trigger. The purchase is a separate wager with its own price, rules, payout distribution, and sometimes its own RTP. It is not a strategy for improving the next random result.
A Bonus Buy compresses risk. Instead of placing many base-game wagers while waiting for a feature, the player pays a large amount at once for direct access. If the purchased mode has RTP below 100%, repeated purchases return less than their total cost on average, even though one purchase can pay far above—or far below—the price.
How Bonus Buy Works
The game displays one or more purchasable modes. Each option can have different starting conditions, price, feature rules, RTP, volatility, or maximum payout.
The price is normally expressed as a multiple of the selected base stake. A 100x purchase at a $0.20 stake costs $20.
The purchase amount is deducted at once. It should not be compared with one ordinary spin; it should be compared with an equal amount of total base-game turnover.
The game enters the purchased feature under the rules stated for that option. It may reproduce a naturally triggered bonus, start with enhanced conditions, or use a purchase-only version.
Wins are credited and any mode-specific cap or termination rule applies. The purchase price is not returned separately.
Some games use the same feature rules for both entry methods. Others sell enhanced scatters, guaranteed modifiers, fewer or more spins, or purchase-only starting states. Compare the exact option rather than assuming the word “bonus” refers to one universal round.
How Much Does Bonus Buy Cost?
There is no industry-wide price. Providers and individual games can offer inexpensive access modes, standard feature purchases, or premium modes costing hundreds of times the base stake.
Gates of Olympus 1000
Pragmatic Play’s official page states that the Free Spins bonus can be purchased for 100x the player’s bet.
Wanted Dead or a Wild
Hacksaw Gaming documents a Bonus Buy that gives direct access to one of several bonus games, while the exact casino rules determine the available options and prices.
Money Train 3
Relax Gaming documents four Bonus Buy options, including a 100x buy and a 500x Persistent Bonus, with other starting-condition options between them.
Purchase cost = selected stake × purchase multiplier
| Stake | 100x buy | 500x buy |
|---|---|---|
| $0.20 | $20 | $100 |
| $0.50 | $50 | $250 |
| $1.00 | $100 | $500 |
Base-Game RTP vs Bonus-Buy RTP
The most important comparison is between the complete ordinary game and the exact purchased mode. Several structures are possible:
The ordinary game and purchase mode have the same theoretical return but distribute risk differently.
The bought mode has a lower house edge than ordinary play, but still has negative expectation if RTP remains below 100%.
Direct access costs more relative to the average feature return than ordinary play.
Standard, enhanced, super, and guaranteed-condition buys can each use different mathematics.
Expected return per purchase = purchase price × mode RTP
A $100 purchase with 96% RTP has an expected return of $96 and an expected cost of $4 over repeated equivalent purchases. One result can still be $0, $20, $500, or another permitted amount.
Do not infer the purchased-mode RTP from the ordinary game’s headline percentage. Check the rules after selecting the buy option. The general checking workflow is covered in How to Find and Check a Slot’s RTP.
Why “skipping base-game wins” does not automatically make the buy worse
The purchase price and bought-mode probability distribution already determine its RTP. Base-game recycle wins matter when comparing the experience and path of play, but they should not be subtracted a second time from a correctly published Bonus Buy RTP.
Why Bonus Buy Is More Financially Concentrated
Bonus Buy increases the amount exposed to one feature sequence. It can therefore create much larger balance changes per decision than ordinary spins at the same displayed base stake.
A $0.20 wager exposes $0.20 per decision, with results accumulated across many spins.
The same displayed stake exposes $20 in one decision.
The same displayed stake exposes $100 in one decision.
This does not mean the feature is statistically “due” to return its cost. A purchased bonus can finish with little or no return unless the rules state a guaranteed minimum.
Three, five, or ten buys remain a small and highly variable sample. Budgeting for more purchases does not make recovery more likely and can turn a single high-cost decision into repeated loss chasing.
Bonus Buy, Ante Bet and FeatureSpins Are Different
| Mode | How the player pays | What changes |
|---|---|---|
| Bonus Buy | One high-cost wager | Direct entry into a specified bonus mode |
| Ante or enhanced-chance bet | Higher cost on each base-game spin | Can increase feature-trigger probability or activate another rule |
| FeatureSpins or special bet | A separate wager amount per game | Can guarantee modifiers, remove outcomes, or change the active distribution |
| Bonus-only game | Every wager enters a bonus-style round | There may be no conventional base game to skip |
A higher feature frequency does not establish better value. Compare the additional cost, active RTP, volatility, maximum win, and exact rule change.
Why Bonus Buy May Be Missing
Availability can differ by jurisdiction, operator, game version, account mode, and active promotion. The feature may be removed from one market while remaining part of the supplier’s game in another.
The UK Gambling Commission warned operators in 2020 about slot “feature buy-in” facilities under its transparency and safer-product requirements. The six operators contacted removed those features. Therefore, a UKGC-facing version should not be assumed to include the same purchase options shown on a supplier’s international page.
Regulatory positions elsewhere can change. The article should not maintain an unsourced country-by-country “banned or legal” table. Verify the current rules and the exact casino implementation.
Bonus Buy and Casino Promotions
Casino bonus terms may exclude Feature Buy wagers, reduce their contribution to wagering requirements, cap stakes, or disable the button while promotional funds are active. These are operator terms, not properties of the slot’s mathematical model.
- wagering contribution percentage;
- maximum permitted stake or purchase amount;
- excluded games and modes;
- maximum convertible winnings;
- whether the purchase is permitted with bonus funds.
Checklist Before Buying a Bonus
Use SlotRandomizer to find games offering Bonus Buy, then verify the available options, price, RTP, and rules inside the exact casino version.
Explore Bonus Buy slots →Frequently Asked Questions
The Bottom Line
Bonus Buy is a high-cost access method, not a shortcut around the house edge. Compare the exact mode’s price, RTP, starting state, payout distribution, and restrictions. A large purchase can end with a small return, and repeated purchases do not become due to recover earlier losses.
