What are we talking about? An online casino bonus is a means of enticing you the user to sign up with them, rather than a competitor. It's not quite as cynical as that really as it's also a way of them giving you something back for downloading and playing their software. Having said that, like most good things, it's time to read the small print.

An online casino bonus is available from every bonefide site we know. You will probably have seen the offers from nearly all sites that say "sign up and get $100 free" or "get upto 20% free" as a thank you for downloading their software. This is very real and the signup offers will be credited to your account once you have placed a suitable credit into your account. However, you cannot then simply demand a payout based against your account. Often you will need to bet more than 20 times the amount of the free cash before you will be able to get your "payout" (this can be very easy to do if you win and lose in equal measure on one session).

We thought it would be a simple means for us to present you with a simple table showing the largest Bonuses on offer - this doesn't mean they are the best casinos however!

So having downloaded all of the software and played most of the games for 'our' reviewed casinos, much of where you finally put your money must be about your preferences for design, playability and the games you want to bet on. So try a few for free and then get winning.