Short answer: At 100% weighting every £1 staked counts as £1 of wagering. At 10% it counts as 10p, so the same bonus needs ten times the play.
Typical weightings
| Game | Typical contribution |
|---|
| Most slots | 100% |
|---|
| Some high-RTP slots | Reduced or excluded |
|---|
| Roulette | 0% to 20% |
|---|
| Blackjack | 0% to 20% |
|---|
| Live casino | 0% to 20% |
|---|
| Jackpot slots | Often excluded |
|---|
Typical industry patterns, not any one casino's list.
The effect
| Weighting | Stakes needed | Effective multiple |
|---|
| 100% | £250 | 10x |
|---|
| 50% | £500 | 20x |
|---|
| 20% | £1,250 | 50x |
|---|
| 10% | £2,500 | 100x |
|---|
The legal cap is on the stated multiple. Weighting is how a 10x bonus can still demand far more on the wrong game.
Our partners
10bet's bonus is wagered on slots. Casumo says games contribute at different rates and publishes a list. The three spins offers have no wagering, so weighting never arises.
Ad 18+ only. We may earn commission from these links. Advertiser disclosure
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Where to check
In the bonus terms, look for "contribution", "weighting" or "eligible games".
Related
Roulette and blackjack bonuses.
More bonus guides: Casino bonus expiry, How to opt out of casino bonuses and Sticky vs non-sticky bonus.
Excluded games and what happens if you play them
Some games are excluded outright while a bonus is active. Playing one may add nothing to wagering, or may breach the terms and void the bonus. If a game you want is on the excluded list, finish or forfeit the bonus first.
Weighting and free spins
Free spins are fixed to named slots, so weighting only matters if their winnings become bonus money with wagering attached. With all three verified spins offers here they do not.
Offer terms dated 5 October 2026, from each casino's published conditions. How we check and rate. 18+. Free help: National Gambling Helpline 0808 8020 133 or safer gambling.
