Bonus Buy Slots Explained

How a bonus buy works

A bonus buy slot has a "buy" option, usually a button beside the spin control, that lets players buy direct access to the slot's main feature. The price is a multiple of the base bet, commonly around 100 times the stake, and some games offer more than one level of buy with different prices and stronger features. At a ₹20 stake, a 100x buy costs ₹2,000 for one bonus round.

That round can pay back far less than it cost or far more. The result of the free spins is still random, so a ₹2,000 buy can easily return ₹300, and a rare one may return many times the price. What changes is the pace: money that would normally be spread over a hundred or more base-game spins is staked in one go.

What happens to RTP

The return to player (RTP) percentage for a bonus buy can differ from the RTP of the base game. Many games list the two separately in the help or rules screen; in some titles the buy is slightly lower, in others roughly the same or slightly higher. The specific figure varies by game and by the RTP setting the game runs at, so the only reliable source is that game's own information screen.

Even when the two figures match, the cost of the feature is large. RTP is a long-run average, and the house edge applies to every rupee staked. If a buy has an RTP of 96%, each ₹2,000 purchase loses ₹80 on average over a very long run, but the swings around that average are huge: a session of ten buys means ₹20,000 staked in a few minutes, and the result can land far below the average. No buying pattern or timing changes the expected loss, because no system beats the house edge.

Why some regulators ban it

Regulators worry about features that speed up play and encourage bigger stakes, and a bonus buy does both. It turns one click into a stake many times the normal bet and removes the natural pause of spinning the base game. The UK Gambling Commission does not allow the feature in slots offered to players in its licensed market, and other regulators have considered similar limits on game speed and stake intensity.

In India, the Promotion and Regulation of Online Gaming Act, 2025 prohibits offering, facilitating, advertising and processing payments for online money games, including online casino games such as slots. The Act is aimed at providers, advertisers and payment channels rather than at players, and it does not make online casinos legal in any form.

When reading about a bonus buy slot, the useful questions are how many times the stake the buy costs, whether the buy has its own RTP listed, and how much of a budget one purchase would use up. A feature that can consume a whole budget in a single round is the reason regulators treat it with caution.