Mark Rylance, founder and Editor-in-Chief of AllSlotsOnline.Casino

About AllSlotsOnline.Casino

An independent online slots and casino guide, founded and led by Mark Rylance

AllSlotsOnline.Casino is an independent guide to online slots and casinos. We catalogue more than 25,000 slot machines, most of them with free demos you can play without registering, and we rate casinos honestly. Our only priority is the player.

How it started

The site was founded in 2020 by Mark Rylance, and for its first years Mark built and ran it single-handedly. He had already spent over a decade in online gambling, first as a player across poker, slots and table games, and then on the other side of the screen working with slot software. That mix shaped the whole project: a place where players could try thousands of games for free, read straight talk about how they really play, and never feel sold to.

The mission has not changed since day one: make playing at online casinos fair and comfortable, and keep the player first.

The team today

For a long time this was a one-person site. That changed at the start of 2026, when Mark brought together an international editorial team so that each market could be covered by people who actually live in it. Rather than translating one country's view of gambling, we run separate editorial desks, each staffed by native writers who know their own market, its rules and its casinos first-hand.

Mark coordinates that international newsroom and holds every desk to the same standard: play the games, check the licences and the terms, and say plainly what we find. Nothing goes live until it has been reviewed against that standard.

How we test and rate

Our ratings are built the same way every time, so you can compare one page against another with confidence:

  1. Data first. We gather the published facts about each slot and casino: provider, RTP, volatility, licence, payment options and bonus terms.
  2. Hands-on testing. Each slot is played in demo mode before we publish a verdict. For casinos we test the sign-up process and look closely at withdrawal limits and processing times.
  3. Licence and terms check. We confirm the operator's licence and read the small print on bonuses, because a generous headline offer can hide unreasonable wagering conditions.
  4. Editorial review. Every piece is checked against the data before it goes live, and we revisit pages when the facts change.

Our values

Honesty comes before everything else. A rating that can be bought is worthless, so ours are not for sale. We would rather tell you a popular game has a weak RTP than dress it up, and we correct our mistakes openly when readers point them out. If we cannot verify a claim, we do not print it.

How we make money

You should know exactly how this site is funded. When you follow a link from one of our pages and take an action on a partner casino's site, that casino may pay us a commission. Some of our casino reviews earn money this way.

This model keeps the site free of intrusive banner advertising and lets us focus on content that is actually useful. One rule is non-negotiable: commissions never influence a rating, a ranking or a verdict. If a paying partner runs a poor casino, our review will say so.

Responsible gambling

Gambling is entertainment, not a way to make money. Every game we list is designed with a house edge, and no strategy changes that. Set a budget before you play, treat losses as the cost of the entertainment, and stop when it stops being fun. Free demos are a sensible way to try games without spending anything at all.

Our content is intended for adults aged 21 and over. If gambling is causing you problems, or you are worried about someone close to you, organisations such as GamCare and BeGambleAware offer free, confidential support, and most licensed casinos provide deposit limits and self-exclusion tools.

Get in touch

Got an idea for an article, spotted an error, or interested in a partnership? Use our contact page to reach us. Mention the topic in your subject line and we will get back to you as quickly as we can.

Our editorial team

All our content is written by our editorial team and checked before publication. We play the games ourselves, verify licences and withdrawal terms, and update every review as soon as something changes.

Under the supervision of Editor-in-Chief Mark Rylance

About our team