CASINO OF THE MONTH

21Prive offers a 150% bonus up to 300€
Videoslots
  • Over 2580+ slots
  • T&C always applies
  • Bonus wager is 20x
DEPOSIT BONUS
100%
UP TO 200€
Leo Vegas
  • Very high quality casino
  • T&C always applies
  • Bonus wager is 35x
DEPOSIT BONUS
200%
UP TO 250€
21Prive
  • Top rated by our customers
  • T&C always applies
  • Bonus wager is 35x
DEPOSIT BONUS
200%
UP TO 1000€
GDay
  • Live table games
  • T&C always applies
  • Bonus wager is 35x
DEPOSIT BONUS
100%
UP TO 100€
CasinoEuro
  • Wide range of slots
  • T&C always applies
  • Bonus wager is 40x
DEPOSIT BONUS
100%
UP TO 150€
iGame
  • Good register offer
  • T&C always applies
  • Bonus wager is 50x
DEPOSIT BONUS
100%
UP TO 50€
Fruity Casa
  • High quality casino
  • T&C always applies
  • Bonus wager is 35x
DEPOSIT BONUS
100%
UP TO 100€
Diamond 7
  • Shiny new casino
  • T&C always applies
  • Bonus wager is 30x
DEPOSIT BONUS
100%
UP TO 100€
Hello! Casino
  • Popular casino
  • T&C always applies
  • Bonus wager is 35x
DEPOSIT BONUS
100%
UP TO 100€
Red Spins
  • Newly founded casino
  • T&C always applies
  • Bonus wager is 30x
DEPOSIT BONUS
200%
UP TO 50€
Rizk
  • Wheel of Rizk
  • T&C always applies
  • Bonus wager is 45x
DEPOSIT BONUS
200%
UP TO 100€
Thrills
  • 50 wager-free spins
  • T&C always applies
  • Bonus wager is 45x
DEPOSIT BONUS
200%
UP TO 100€
William Hill
  • Founded in 1934
  • T&C always applies
  • Bonus wager is 40x
DEPOSIT BONUS
100%
UP TO 300€
Superlenny
  • The elk casino
  • T&C always applies
  • Bonus wager is 45x
DEPOSIT BONUS
200%
UP TO 100€
Ovo Casino
  • Novomatic casino
  • T&C always applies
  • Bonus wager is 40x
DEPOSIT BONUS
100%
UP TO 1000€
Dunder
  • Low wager bonus
  • T&C always applies
  • Bonus wager is 25x
DEPOSIT BONUS
200%
UP TO 50€
Guts Casino
  • Relaxing design
  • T&C always applies
  • Bonus wager is 45x
DEPOSIT BONUS
150%
UP TO 400€
Unibet
  • Known company
  • T&C always applies
  • Bonus wager is 20x
DEPOSIT BONUS
200%
UP TO 100€
888casino
  • Aged company
  • T&C always applies
  • Bonus wager is 30x
DEPOSIT BONUS
100%
UP TO 140€
Bethard
  • Zlatan promoted
  • T&C always applies
  • Bonus wager is 20x
DEPOSIT BONUS
100%
UP TO 100€
Cherry Casino
  • Good design
  • T&C always applies
  • Bonus wager is 50x
DEPOSIT BONUS
100%
UP TO 100€
Winningroom
  • Live support 24/7
  • T&C always applies
  • Bonus wager is 35x
DEPOSIT BONUS
100%
UP TO 100€
Sweden Casino
  • Scandinavian people
  • T&C always applies
  • Bonus wager is 35x
DEPOSIT BONUS
200%
UP TO 100€
Redbet
  • Good selection of slots
  • T&C always applies
  • Bonus wager is 35x
DEPOSIT BONUS
100%
UP TO 100€
Lucky Dino
  • Growing casino
  • T&C always applies
  • Bonus wager is 50x
DEPOSIT BONUS
100%
UP TO 400€
Aha Casino
  • Great company
  • T&C always applies
  • Bonus wager is 30x
DEPOSIT BONUS
100%
UP TO 100€
Betsson
  • Popular casino
  • T&C always applies
  • Bonus wager is 35x
DEPOSIT BONUS
100%
UP TO 100€
Jefe
  • Reload bonus
  • T&C always applies
  • Bonus wager is 50x
DEPOSIT BONUS
100%
UP TO 100€
Casumo
  • Huge reel races
  • T&C always applies
  • Bonus wager is 30x
DEPOSIT BONUS
200%
UP TO 50€
Gratorama
  • 7€ Free on sign-up
  • T&C always applies
  • Bonus wager is 30x
DEPOSIT BONUS
100%
UP TO 200€

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New regulations in Sweden Recently we saw some new rules come to effect, the first of January to be more precise. Since January casinos are required to have a license to be able to operate in Sweden, you can read more about it on the new Swedish casino...

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Welcome – find the best casino bonuses and free spins here.

Welcome to Big Win Theory! We are here as your online casino guide to make sure you find the best and most suitable gaming website to place your bets. Our goal is to make sure you find the best deals with the absolute highest bonuses, and with the best free spins that we can find across all the different online casinos.

At BigWinTheory, we provide you with the latest Online 3D slots machines, their jackpots, bonuses, news and casino games with all the latest tips and strategies on how to beat the casino. With countless casino gaming sites found all over the internet, we have narrowed down the choices and have done the research ahead of time to make sure you maximize your playing time! It can be overwhelming with the variety and as a new-comer, it can be especially difficult to determine which gaming sites are trustworthy and legitimate. We provide reviews on the casinos that we recommend (we are not sponsored in any way), just honest professional opinions.

We want to equip you with the best possible gaming knowledge and provide you with the most up to date information about the casinos listed. Here at BigWinTheory, you’ll be able to research information about various casino bonuses, slot providers, payments/payout options, mobile gaming, and casino legitimacy. Your safety online is important to us. There are loads of special offers and deals given to new players and the most important factor for all online gaming is to make sure that it adheres to all gaming laws, has a proper license, and operates legally.

Games are ultimately the primary consideration when assessing an online casino. We don’t just mean the prizes available or the number of games listed, but the variety and quality of these games are just as important. So what should you be looking for? Ideally, you need to find a good variety of games to choose from. The most popular casino games, such as roulette and blackjack should include several different variants, and not only the traditional styles seen everywhere else. Instead of a roulette table being limited to classic variants of French, European and American, a good game selection will also include interesting and exciting options such as Pinball, Multi-wheel and 3D Roulette. Similarly, blackjack is widely popular and alongside its classic and multi-hand choices, many online casinos offer various alternatives like Blackjack Surrender, Switch and Double Attack (and many more). Slots have always been the majority of any online casino’s game collection, with most slot providers having a collection containing hundreds of games. Learn everything you need to know about finding the right online casino for you at BigWinTheory!

Casino of the month