Bonus buy slots sell you the feature directly: instead of grinding spins waiting for scatters, you pay a fixed price — usually 60x to 100x your stake — and the bonus round starts immediately. The whole collection here supports it.
The honest math: buying usually carries an RTP close to, and sometimes slightly different from, the base game — some titles publish separate figures for bought bonuses. What changes most is variance: you are compressing a long session into one high-stakes event. Budget for the full buy price as one bet, because that is what it is.
RollHub currently lists 3,990 bonus buy games you can open straight from this page. Every card shows the game's RTP before you play.
Ranked by published RTP among the most-played titles here. RTP is the long-run average return per 100 wagered, not a prediction for any session.
Studios behind the most-played titles in this collection: