Skip the base game and go straight to the action. Bonus buy slots let you purchase the feature round directly — typically for 75x–100x your stake — giving you instant access to the highest-volatility part of the game. We’ve ranked the 10 best feature buy slots available right now, scored on bonus quality, max win ceiling, RTP, and whether the buy price is actually worth it.
Editor's Pick
The most satisfying bonus buy in the industry. Pay 100x your stake, land in 15 free spins with Zeus multipliers that stack without a cap, and watch the base spin multipliers compound across the grid. The bonus round is consistently engaging — cold spins feel purposeful, and hot spins feel genuinely transformative. No other feature buy delivers this experience so reliably.
Highest Max Win
21,100x max win for a 100x buy cost — that ratio is hard to beat. The lollipop bomb multipliers during free spins combine multiplicatively, meaning four bombs landing on the same spin don’t add up, they multiply together. Buyable for consistency, exceptional when bombs start chaining. The highest ceiling of any feature buy on this list.
Money Train 2 set a new standard for what a bonus round could be. The Bonus Train mechanic fills a 5-reel board with persistent symbols — Collectors, Payers, Multipliers — that interact and compound across every spin of the feature. 50,000x is the ceiling, and while it’s rarely reached, medium hits in the hundreds or thousands of x are genuinely frequent. Worth every penny of the buy cost.
Buying the Dog House Megaways bonus gets you straight into free spins with sticky wilds that accumulate multipliers every spin they remain on the reels. With up to 117,649 ways to win and multipliers stacking independently across each wild, the compounding effect is spectacular when the board starts filling. One of the most exciting free spin rounds available via bonus buy.
The highest RTP on this list at 96.80% and a staggering 87,378x max win. Danger! High Voltage’s Gate of Hell feature delivers one of the most visually electric bonus rounds in slots — symbols explode, stacked wilds cascade, and the electro-punk soundtrack makes every spin feel like an event. A unique bonus buy that genuinely justifies its cost for thrill-seekers.
Hacksaw calls it Bonus Hunt rather than a buy, but the effect is the same — three tiers available at 80x, 200x, and 400x stake. The 80x entry (The Great Train Robbery) gets you into free spins with sticky wilds that lock for the entire respin sequence. The more wilds that land, the more explosive the result. The 400x Dead Man's Hand tier is one of the most volatile buys available on any slot.
Sweet Bonanza taken further. Sugar Rush 1000 has a bigger multiplier potential in its bought free spins — the sugar clusters cascade and multipliers stack faster with more volatility built into each spin. If you enjoy buying Sweet Bonanza bonuses and want a step up in intensity, this is the natural next choice. The 1000 in the name isn’t decoration.
The highest max win on this list — 100,000x. Money Train 3 has the most flexible buy structure here: 20x (1 spin), 50x (2 spins), 100x (standard), or 500x with a guaranteed starting Persistent Symbol. It keeps the Bonus Train mechanic of MT2 and adds the Necromancer and Sniper symbols for more chaotic interactions. The 500x tier with a Persistent Symbol is the highest-variance single purchase available on any slot right now.
Starlight Princess is one of Pragmatic Play’s most popular bonus buy slots, and for good reason. The 100x feature buy lands you directly into free spins with a multiplier that climbs on every spin — no cap. With 5,000x max win potential and a consistent free spins structure, it delivers the high-variance payoff bonus buyers are looking for without the complexity of tiered systems.
Highest RTP
The safest bonus buy on this list. Big Bass Bonanza’s 96.71% RTP is the highest here, and buying directly into the free spins gets you the fisherman wilds immediately — wilds that collect and multiply all money symbols on the board. Lower max win ceiling than the others but the most consistent feature buy experience for players who prefer steady returns over moonshots.
The short answer: mathematically, no — but that’s not the right question. Buying the bonus does not change the RTP of the slot. You’re paying 75x–100x your stake for immediate access to the feature, which is the same expected value as grinding through the base game waiting for it to land. The casino’s edge is identical either way.
A bonus buy makes sense when your session goal is specifically to experience the feature round — not to play the base game. High-volatility slots have base games designed to be relatively dull by comparison. If you have a $200 session budget and the slot base game charges $1/spin, you could spend 100 spins ($100) waiting for the bonus to land naturally, or spend that same $100 on a single 100x buy and go straight to the part you actually came for.
Bonus buys are not a strategy for winning more. The variance within the bought bonus is identical to organically triggered bonuses. Cold bonuses happen — you can buy Gates of Olympus and land 15 free spins that return 20x. That’s a 80x loss on the buy. Plan your session around the possibility of that outcome before pressing the buy button.
All four casinos carry every slot on this list and allow bonus buys. Verify your jurisdiction’s rules before using the feature.
