How We Rate Casinos, Bonuses & Slots

In the online gaming industry, new and entertaining casinos, slots, and bonuses are always waiting to be claimed, played, and explored. To ensure players get access to the best of the best reviews, sites like TopSpotCasinos are there to check out the latest sites, slots and offers.

In this guide, we go through how we approach the latest in the industry and how we sift through it before deciding which gets piled on the hot list and what determines the not list.

What Makes a Good Casino, Bonus or Slot and How We Rate Them

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With casino ratings, there are a few things we check off our online casino reviews list before considering adding a site to our list of top recommendations. It includes whether a reputable authority licenses them, utilises top security features, comes with great bonuses, features high-quality games from leading software providers, and has around-the-clock customer support. Other important checks include banking options and extras like tournaments. The sites that fail to meet these requirements will not be considered top sites.

When it comes to bonus ratings, you’ll find good insights in our online bonus reviews. We keep you updated with all the latest online bonuses that are considered quality offers for new and loyal players at top-rating casino sites.

Regarding bonuses, we rate things like the wagering requirements, time limits, game restrictions, minimum deposit, and other important details that might deter you from having a good time while claiming the offer.

Slot ratings are determined by the game provider, the quality of the game designs and sounds, the features available, and the overall game experience. As a game player, you want to know you’re about to enjoy an immersive gaming experience instead of the generic spin-to-win type of play. Of course, more classic-style slots have their charm, but everything a slot has to offer, from the visuals to the overall gameplay to the ease of playing, is judged before a slot rating is provided.

How We Evaluate Different Types of Casinos & Their Services

When it comes to choosing the best casinos, there are a few things to take into consideration. Here at TSC, we have a whole online casino evaluation criteria we go through before adding any sites to our list of top recommended casino sites.

Here is a quick list of our casino review criteria:

  • Licensing – First and foremost, the objective is to determine the casino’s security and trustworthiness. We start by checking for licensing from a legitimate licensing authority. Licensing will be transparent and on display if it’s a reputable site, and it is generally available for anyone to see in the footer of the website. Some of the most respected gaming authorities known for licensing and regulating online operators within the industry include the UK Gambling Commission, the Malta Gaming Authority, Kahnawake Gaming Commission, and many others.
  • Casino games – Aside from proper licensing, there’s nothing quite as important as a decently stocked gaming library. During the review process, TSC goes through the game library to review all the available games. We check how many games are available, how they are organised, and how easy it is to search for the types of games you want to play. As a rule of thumb, the best casinos will have a decent variety of online slots, table games, instant win games, and live dealer variants. A big plus is if the site comes with casino games, a live casino, and a sportsbook giving you plenty of betting action.
  • Customer service – One of the most important factors of a high-quality online casino is a professional customer support team that is available to assist with any questions and queries. The preference is a support team available around the clock via Live Chat, Email, and Telephone or the majority of support channels for most of the day and evening. There’s nothing worse than stumbling across an issue with no assistance available for a couple of hours, and you want the option of instant help should you need it. During our vetting process, we test the support team’s responsiveness to ensure that support is as fast and efficient as advertised.
  • Banking options – Any top-rated online casino site will have various secure, trusted banking options. These payment methods may vary based on your region. However, there should always be a good range of payment methods available, including traditional card payment options, e-wallets, and crypto payment methods.
  • Provably fair – Provably Fair games come with a winning rate of up to 99%. These games allow you to prove the fairness of bets, which ensures casinos can’t cheat or change the outcome of games. When Provably Fair games are available at a casino, the result will always be available for access on the site.
  • Promotions – Bonuses and promotions can go a long way to keeping players committed to an online casino. Our task is to ensure that the promotions available at top recommended sites are of the best quality. This means the biggest offers with the best possible terms and conditions, from the lowest wagering requirements to the most reasonable time frames, the highest payouts, and the widest variety of games to play.
    On top of that, we check to ensure that there is a variety of offers to choose from, including free spins offers, generous welcome bonuses, no deposit bonuses, match deposit bonuses, and cash-back offers to name just a few. A great VIP program doesn’t hurt either, ensuring there is a way to build up to bigger and better benefits as you up your loyalty ranking.
  • Tournaments – There’s no denying that games are online casinos’ primary entertainment source. However, sometimes you want additional forms of entertainment that may or may not lead to extra benefits and rewards. Top-rated casinos have thought of this, and they run frequent tournaments for this purpose. These can come in all shapes and sizes, from freeroll tournaments to Sit & Go’s to Prize Pools. The prizes for grabs may vary from regular casino bonuses and free spins to massive cash prizes.

Take Note: No online casino that doesn’t check most of our bonus review criteria boxes will be added to our list of top recommendations.

Factors to Consider When Choosing the Best Casino Bonus

When you’re still a little green in terms of online casinos, games, and bonuses, you might think that a bonus just needs to look good to be considered a good offer. But there are many factors to consider when choosing the best casino bonuses.

Here is a quick look at what important terms we consider before adding any offer to our list of top casino bonuses.

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  • Wagering Requirements – Any online casino bonuses will come with wagering requirements. This is the number of times you need to wager the bonus before you can withdraw real money from the bonus. The best sites will have a withdrawal requirement of 35x or less.
  • Time Limits – Any offer will have a time limit on the offer. This is the amount of time you must claim the offer and meet the wagering requirements. This can be anything from 7 to 30 days, and some top sites will give you 90 days.
  • Game Restrictions – As you play to meet the wagering requirements, the online casino bonuses will have some game restrictions to keep in mind. These games will not contribute to the wagering requirements, and some of the top sites will have very few game restrictions, with most slots contributing fully.
  • Minimum Deposit – Always keep the minimum deposit in mind. Most top online casinos require a minimum deposit of 1 – 10 dollars to claim your bonus.

The best is to opt for sites with complete transparency on their bonus terms and conditions.

How We Rate the Best Online Slots and Features

New online slots hit the market monthly as providers compete for player attention. There are so many amazing slots out there, but for a game to make the best online slots list, it genuinely must be remarkable. Everything from its theme to its graphics, sounds and features needs to be sublime if it’s to be considered one of the best slots for bonuses.

Let’s take a quick look at some of the top slot features currently available in popular titles at leading casinos today.

  • Free Spins – It is often a main feature of a slot where you get awarded a certain amount of free spins when you land 3 or more of a special symbol. During these free spins, your chances of wins increase, and depending on the mechanics, there are often other special symbols that can land on the reels to increase the chances of bigger wins.
  • Stacked Wilds/ Locked Wilds – Wilds are generally popular in slots, but Sticky or Locked Wilds are all the rage nowadays. This special feature can also be found in main or bonus rounds, where the wild symbol will stay in place as the rest of the reels spin. With it, the potential for wins increases.
  • Expanding Wilds/ Symbols – There’s nothing like getting surprised by fun symbols that increase the opportunities for winnings on the reels. Expanding wilds or expanding symbols do just that. These are special symbols that are chosen before the main bonus feature (often the free spins), and then during the feature, they expand to cover the entire reel and lead to easier wins.
  • Bonus Buy – The Bonus Buy feature is known by many different names, but the premise of it remains the same. With this feature, impatient players can skip the base game and buy their way straight into the main bonus game the slot has to offer. You will often have to pay a pretty penny as it will require between 50 to 150 times your stake to buy the bonus. But with the feature, you ensure the chance to enter the bonus round and have instant access to bigger potential wins with each spin.

The most important feature of all is that a slot is filled with ways to entertain you. Having fun should already be the number one priority.

Why Online Casino Reviews Matter

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With reliable casino reviews, you’ll get a quick overview of what any online casino offers. It enables you to get a read on the casino and everything it has to offer before you choose whether to sign up.

Online casino reviews are important as they tell you more about online casinos, the security they have in place, and whether they are licensed. You learn about the types of games available, how smooth the site runs on desktop, if it’s operational on mobile and whether it’s downloadable for gaming on the go.

And with casino reviews, there’s always the opportunity to gain access to exclusive promotions giving you additional benefits and bonus boosts. If there’s a casino you’ve got an eye on, be sure to check out our full casino review on the online casino in question to see if it’s a trusted and recommended brand.


Top things to look for in an online casino?

Always look for a valid license from a reputable gaming authority, a large range of quality games, and reliable customer support.

Will I have to pay fees on deposits or withdrawals at top online casinos?

With many top online casinos, deposits are free of fees; depending on the payment method, fees can be a factor in withdrawals. However, if fees are applicable with withdrawals, it will clearly be stated on the casino banking page.

Can I grab casino bonuses when playing at an online casino?

One of the many benefits of playing at online casinos is boosting your gameplay with bonuses and promotions. You can check the casino promotions page for the latest bonuses and promotions.

Can I play at online casinos via my mobile device?

Most of the top recommended sites here on TSC are optimised for mobile gameplay, enabling you to play via desktop, tablet, and mobile. Enjoy the best games from anywhere at any time with your mobile phone.

What is a Bonus Cashout Limit?

Some bonus promotions will be capped, which means you will only be able to win a certain amount with that bonus. If it’s capped at $500, then you will not be able to win more than $500 with that bonus.

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