What is Feature Buy RTP?

Feature buy RTP is the return to player that applies while a bonus round has been purchased rather than triggered by play. It is a separate figure from the game's base return, and studios that offer a buy generally state both. The two are different because they describe different games. A slot's headline return is calculated over ordinary spins, in which the bonus round arrives at whatever rate the maths allows. When you buy the round, you skip the spins that were paying for it and pay a fixed price instead, so the calculation changes: the cost is now certain and the outcome distribution is the round's rather than the game's. The direction of the difference is not fixed and cannot be assumed. Some titles publish a buy return slightly above the base figure, some slightly below, and the gap is usually small — a fraction of a percentage point either way. What is not small is the change in volatility. Buying removes the low-variance part of the game entirely, so the money is concentrated into the round, and a session of purchases will swing far harder than a session of ordinary spins at the same total stake. The practical reading is this. If a game offers a buy and states only one return, that figure describes the base game and may not describe what you are about to pay for. Several jurisdictions have banned feature buys outright on the argument that the button compresses the time between decisions to spend, which is a separate question from the return and one worth knowing about before deciding whether the price is fair.