Monster Casino Review (2025) - Large Slots Library

Monster Casino launched with the stated aim of providing 'quality entertainment' in a 'safe, fun, fair, regulated, secure and enjoyable environment'.

They have since built up a considerable library of more than 2,500 casino games, including 2,000+ slots and an extensive selection of table games, scratchcards and live dealer options.

My in-depth review will cover all the bases - to find the good and the bad.

Monster Casino is operated by ProgressPlay Ltd, a prolific UK casino provider who run dozens of casino sites, including Casino Kings and Fruity King.

This site is licensed and regulated by the UK Gambling Commission - licence no. 39335.

Monster Casino offers new players a welcome bonus on their first five deposits, with up to £1,000 in bonus funds available.

First Deposit

• Deposit a minimum of £20
• Receive 50 free spins on Rich Wilde and the Book of Dead

Second Deposit

• Deposit £20+
• Receive a 25% deposit bonus up to £200

Third Deposit

• Deposit £20+
• Receive a 25% deposit bonus up to £200

Fourth Deposit

• Deposit £20+
• Receive a 25% deposit bonus up to £600

Fifth Deposit

• Deposit £20+
• Receive 50 free spins on Starburst

Monster Casino Promo Code

You don't require a promo code to claim this bonus.

How It Works

• You are eligible to receive bonuses on your first five deposits on-site
• These bonuses offer a mix of deposit-match bonus funds and free spins
• Bonus funds will expire after 30 days
• Winnings are capped at 3x (bonus funds) or £20 (free spins)
• Skrill and Neteller deposits are not eligible to receive a bonus

Wagering Requirements

This bonus package comes with 50x wagering attached.

You will have seven days to clear the wagering requirements on free spins winnings, as well as 30 days to do the same on any bonus funds winnings accrued.

Is the Monster Casino Bonus Worth It?

This welcome bonus is a unique proposition, in that it hands players on each of their first five deposits as a customer.

Slot gamers can play 50 free spins each on Rich Wilde and the Book of Dead and Starburst, while second, third and fourth deposits are met with a 25% bonus, with a total package of up to £1,000 available.

It must be stressed that the wagering requirements of 50x are considerably higher than the industry average. Other online casino bonuses are available that come with lower wagering requirements attached.

But, on balance, a welcome bonus package of 100 free spins and up to £1,000 in usable funds has to be considered a strong proposition.

Key Benefits:

✔️ Long-Term Value - You can receive bonuses on each of your first five deposits on-site

✔️ Generous Deposit-Match - New players can claim up to £1,000 in bonus funds

✔️ Top Slot Free Spins - The free spins are for a couple of the UK's most popular slots

Who is This Bonus Best For?

✔️ This is a higher-value casino bonus aimed at players willing to play through an above-average wagering requirement

After playing through the welcome bonus, players have other promotions that reward ongoing loyalty.

You can launch the Wheel of Spins, which randomly awards between five and 500 free spins to use on selected games.

They also offer a VIP program, which awards points as you complete missions on-site. As you climb the leaderboards and level up, you can redeem these points for bonuses, free spins, cashback and more.

The most popular payment methods accepted include Visa, Mastercard, PayPal, Apple Pay, Skrill and Neteller (remember that these latter e-wallets are exempt from the welcome bonus).

Those same payment methods are available for withdrawals, as well as bank transfer. 

Although Monster Casino doesn't offer instant withdrawals, many Skrill and Neteller cash out requests are completed within 24 hours.

Any new casino players will need to complete a KYC verification process when joining this casino.

Before you are able to deposit, you will need to supply Monster Casino with a proof of identity document (passport, driving licence etc), as well as proof of your address (utility bill, bank statement, debit card statement etc). This must be dated no longer than three months prior to account registration.

These documents can be uploaded via your account dashboard. Players will receive an email once these have been approved.

There's more than 2,500 games to discover at Monster Casino, with in excess of 2,000 slots making up the bulk of the lobby.

Extensive Slots Collection

The layout of the slot lobby isn't particularly helpful, but it's well worth using the search bar to see if your favourites are here given the huge range of games available.

Starburst, Gonzo's Quest, Fishin' Frenzy and Rainbow Riches are just some of the classic online casino games on offer, alongside video slots and some progressive jackpot titles, like Odds of the Gods.

These online slots are provided by an array of developers, including NetEnt, Microgaming, Play'n GO, ELK Studios and more besides.

Solid Range of Live Dealer Tables

Monster Casino offers more than 100 live casino tables from Evolution Gaming and Playtech Live.

These cover the usual suspects - blackjack, roulette and baccarat mainly - but with different play styles and limits available. For example, there's European, French, Lightning, Multi Wheel and VIP roulette.

Other options include Dragon Tiger and Three Card Poker.

Plenty of Classic Blackjack and Roulette Games

Players who prefer classic RNG table games will find more than 25 of them here.

Beyond the usual mix of blackjack and roulette variants, they also offer baccarat, hi-lo and video poker games.

Stacks of Scratchcards

Monster Casino has 25 different scratchcard games to explore, with sports, nature and seasonal themes prominent.

At the time of writing this Monster Casino review, no mobile casino app was available for iOS mobile devices.

However, you can download a dedicated app for Android smartphones and tablets. This features hundreds of games and looks good on smaller screens... even though it is a re-sized version of the main website.

Other Android users are less bullish about the Monster Casino app, with an average score of 2.4/5 from 29 reviews at the time of writing. That said, some of these should be taken with a pinch of salt, as there were complaints and low scores about the wagering requirements - perhaps some players were unaware of these in advance.