Attribute

98% RTP slots

Slots that keep only about 2% of stakes over the long run. Five games at 98% compared, from steady low-volatility classics to swingier high-return picks.

98% RTP

What a 2% House Edge Looks Like

A slot with a 98% return pays back about £98 of every £100 staked over the long run, so the game keeps around £2. Most popular slots sit nearer 96%, which means a 98% game keeps roughly half as much of what you play.

In pounds, 600 spins at £1 cost about £12 an hour on average at 98%, against about £24 at 96%. At the £5 stake limit for players aged 25 and over, that is about £60 against £120, and at the £2 limit for 18 to 24-year-olds, about £24 against £48. The more common band is on our 96% RTP slots page.

Five Slots That Reach 98%

Ordered by the studio’s top setting. Casinos can pick a lower one, so the return shown in the game’s help screen is the one that applies.

Game Studio Layout RTP Max win Volatility
1429 Uncharted Seas Thunderkick 5×3, 25 lines 98.6% 670x Low
Marching Legions Relax Gaming 5×3, 243 ways 98.12% – High
The Catfather Pragmatic Play 5×3, 9 lines both ways 98.10% – –
Blood Suckers NetEnt 5×3, 25 lines 98% – Low
Jokerizer Yggdrasil 5×3, 10 lines 98% – High

The blank ceilings have different reasons: Marching Legions is listed at both 10,000x and 7,458x, Blood Suckers at 900x by NetEnt and slightly more elsewhere, and Jokerizer’s top prize is given in coins rather than as a multiple of the stake. Pragmatic Play publishes neither a ceiling nor a volatility label for The Catfather.

1429 Uncharted Seas

The top return in this group, 98.6%, comes with a low-volatility ride across a hand-drawn sea chart. Thunderkick’s expanding wilds on reels two to four do most of the work in the base game, and compass scatters award 10, 20 or 50 free spins for three, four or five. With a 670x ceiling, this is a game for long, even sessions rather than one big hit. Our 1429 Uncharted Seas guide covers the voyage, and more seafaring games are on our sea slots page.

Marching Legions

Relax Gaming’s 2020 Roman battle shows that a 98% return can still swing hard. It pays on 243 ways and has no scatter symbols: stacks of soldiers fill a collection meter, and five stacks start free spins that advance in up to five waves. Relax lists 98.12%, and most listings call it high volatility.

The Catfather

A mob-family parody from Pragmatic Play, with nine lines that pay from both ends. Its Wild Night feature drops fully expanded wilds on the first three reels at random, and every win in the free spins is multiplied by four. The studio lists 98.10%.

Blood Suckers

The 2009 vampire game is one of the steadiest anywhere: NetEnt lists 98% and a win on 45% of spins. Wins in its ten free spins are tripled, and a separate coffin-picking bonus pays for each vampire staked until a bat ends the round. Fanged company is on our vampire slots page.

Jokerizer

Yggdrasil’s fruit-machine tribute has ten lines and a twist: any win can open Jokerizer Mode, where two jokers landing together trigger a mystery win. Yggdrasil rates it high volatility, and its 98% is only the top of a range that starts at 88.8%. Classic fruit reels are gathered on our fruit slots page.

High Return, Opposite Temperaments

Two games here keep things calm and two do not. Blood Suckers and 1429 Uncharted Seas pay small amounts often, which makes a budget last. Marching Legions and Jokerizer keep the same small edge but pay it back in fewer, larger moments, so a session on them can drop quickly before a feature lands.

A high return is no promise of a smooth ride, and the volatility column matters as much as the RTP one when choosing a game. Calmer games are listed on our low volatility slots page, and the swingier ones on our high volatility slots page.

Where a 98% Headline Slips

Jokerizer shows how far a single game’s settings can spread, from 98% down to 88.8%. Over 600 spins at £1, the top setting costs about £12 an hour on average and the lowest about £67. At £5 a spin those become about £60 and £336, and at £2 about £24 and £134.

Marching Legions lists a lower figure, 97.13%, when its feature is bought, but British versions carry no feature buy, so the free spins come only from filling the meter. Either way, the help screen inside the game is the only place that confirms the setting a casino has chosen.

98% Games and Bonus Terms

Casinos know these games keep less, so high-return slots are among the titles most often left out of bonus wagering or counted at a reduced rate. Blood Suckers in particular turns up on many excluded-games lists.

If you play with bonus funds, the bonus terms list the games that do not count. With your own money, the full return applies. The rare games that go higher still are on our 99% RTP slots page, and the next band down on our 97% RTP slots page.

FAQ

A Low Edge Still Adds Up

Keeping only about 2p in the pound makes these games cheaper to play, not free, and long sessions add the pennies together. Before the first spin, settle how much you will spend and when you will stop, then hold yourself to it with the deposit limits and reality checks in your casino account.

One free registration with GamStop excludes you from all UK-licensed gambling sites together. Support that is free, confidential and open 24 hours a day comes from the National Gambling Helpline on 0808 8020 133, run by GamCare. Real-money slots in Great Britain are only for those aged 18 or over, and online stakes are limited to £5 a spin from age 25 and £2 a spin from 18 to 24.

Polina

Editor

Polina edits every slot review and theme guide on SlotRover, from how each game plays to its RTP, reels and bonus features. Polina comes to SlotRover from the gambling industry.

Last updated: October 2026