2025 Calvin Casino review: Pros & cons explained

Technical difficulties in the game library

Calvin Casino offers just over 1,000 games—not exactly competitive when sites like Rich Palms boast 3,000+ titles. Still, I gave it a fair shot, assuming quality might make up for the smaller library.

Unfortunately, the basics just don’t work. Game categories like Arcade or Jackpots either don’t respond or send you to unrelated sections. I circled back a few days later—same issues. Support told me they’re working on it, but for a live platform, that’s a red flag.

The RTP display is another letdown. Instead of showing actual percentages, the site uses a vague visual meter hovering around 100%. Even the Enhanced RTP section doesn’t list exact numbers. Meanwhile, Bitcasino displays precise RTPs directly on each game thumbnail, no digging required.

Then there’s the Top Wins section, which feels hollow. Unlike BitStarz, where you can see what was won and on which game, Calvin just shows a list of titles with no context. Add in the mysteriously named Feel Luck menu, and the whole thing feels underdeveloped.

On the plus side, I liked the play random game option. Sometimes it’s fun to be surprised. It’s not much, I know, but that’s all I can give you.

The platform should introduce some crypto payment options

Naturally, my biggest beef is that you can’t use cryptos at this casino. If you’re looking for the best crypto gambling sites, this is not it. If you’d like to check out a casino that supports a mix of popular cryptos and altcoins, allow me to direct you to GreenSpin. You’ll find all the popular choices like Ethereum, Bitcoin, Litecoin, USDT, and more here.

Confusing withdrawal speed

While it’s a plus that transactions are fee-free, the rest of the withdrawal process left me with more questions than answers.

The minimum cashout amount of €25 is quite high when compared to the industry gold standard of €10. If you decide you don’t like the site and you want to cash out your account, you’re pretty much stuck there until you gather €25 in wagering.

I also wasn’t happy to find very vague terms regarding withdrawal speed. Instead of telling me how long the cashout takes to be finalized, Calvin Casino only specifies the pending period, which is the time it takes to finish Know Your Customer (KYC) checks. Following that, the transaction still needs to be processed by the casino, but I couldn’t find any information about how long that usually takes.

Based on what I could gather from scattered player feedback, withdrawals may take a few days—hardly ideal when casinos like BitStarz and Wild.io are known for instant or near-instant cashouts.

Limited bonus offer

The welcome bonus of up to €300 plus 100 free spins is not huge when you consider sites like 7Bit offer crypto bonuses up to 5.25 BTC (approximately €50,000+) or a 15% cashback. However, the 40x wagering requirements and 30 day expiry term are very reasonable.

I wasn’t fond of the way the spins are apportioned, though. You receive them in batches of 20, but only after you’ve used up your bonus cash. Typically, these are given out concurrently.

There are more match deposits for the second and third one, up to €300 and €700 respectively, as well as a Refer A Friend offer of 1% on every bet, with no limits. As tempting as this sounds, I won’t be referring any friends.

The mobile version could use an improvement

I have to say that I’m not fond of the idea of downloading an APK to my devices, especially if they contain the same faulty coding as the desktop site. I’ve no idea what the files contain and I won’t be installing them. That said, I did access Calvin Casino using the regular mobile browser and, surprisingly, I encountered no actual UX issues. The menus adapt very well to the interface of my mobile - they still don’t work, though.

Top-level safety measures

Calvin Casino is licensed by one of the stricter regulators in the industry, which already puts it ahead of many crypto casinos operating under less reputable licenses. I was also reassured to see that the platform is audited by iTech Labs, a known third-party testing agency for game fairness and RNG certification. Bonus points for SSL encryption!

But what really caught my attention was the site’s approach to responsible gambling. Calvin Casino doesn’t just offer the standard set of tools—it goes all in with deposit, session, and loss limits, cooling-off periods, and self-exclusion. More importantly, these features are actively enforced.

I was prompted to take a mandatory one-minute break every hour, which might sound minor but can be a game-changer for someone teetering on the edge. That kind of proactive setup is rare, and deserves credit.

Underwhelming customer support

I can’t fault the speed of the reply that greeted me on live chat. And it was clear that I was actually talking to a human, rather than being fobbed off onto a chat bot. The support agent did her very best, but the reply just was not satisfactory. She had no idea how to direct me to this mythical live dealer section, and I left none the wiser as to why the game menus keep glitching.

Technically, the chat is available 24/7, but only once you're registered. There’s also multilingual support in five languages, as well as an FAQ section, which is a plus. On the flipside, there’s no email support option at all, so if live chat can’t help you, you're pretty much out of luck.