bet365 currently has the welcome offer Up to 500 Free Spins for new players, and Prize Matcher and £1,000,000 Lucky Rush for existing players. The cards above show the key terms of each offer, so they are not repeated here. T&Cs apply.
How the offers work

The welcome offer is the only one aimed at new players. It gives 500 spins at most, as the title says, and the spins go on a short list of slots: Book of Horus, Curse of the Bayou, Magic Forge, Wrath of the Deep. That list matters more than it looks. The spins can be used on those games only, so if you do not like them, the offer is worth less to you than the headline suggests.
Wagering is the part of a bonus that usually decides its value, and here it is listed as No wagering. In practice that means you do not have a playthrough target to clear on this offer. The terms that do apply are the minimum deposit of £10 and the validity of 20 days. The days are how long the offer stays valid, so plan to use it within that period. T&Cs apply.
Prize Matcher and £1,000,000 Lucky Rush are for existing players, not for newcomers, so do not expect them when you register. They are separate offers with their own rules, and you should read the terms of each one before you take part. T&Cs apply.
Between the offers, the main difference is who they are for. The welcome offer is open to people who are about to register, so it only matters once. The other two are for people who already have an account, so they matter later, when you have played for a while. Compare them by audience first and by terms second, because an offer you cannot claim is not worth reading about.
If you are new, the order is simple: sign up, then check the deposits page to see how paying in works, then look at the welcome offer terms.
18+ · T&Cs apply
What to check before you take an offer

Start with the games. The welcome offer is tied to Book of Horus, Curse of the Bayou, Magic Forge, Wrath of the Deep, so playing something else does not use the spins. Choose the game you want from that list before you start.
Then the time limit. The offer is valid for 20 days, and the clock is part of the terms rather than a suggestion. Do not leave it to the end of the period.
Next, the deposit. The minimum is £10, so a smaller payment does not meet the condition. Check the amount before you confirm it.
Keep the three offers apart in your mind. A condition of one offer does not carry over to another, so check each offer's own terms rather than assuming they work alike.
Finally, read the full terms and conditions on the casino's site before you deposit. The cards above and the page for each offer give the headline terms, and the full rules sit with the offer itself. T&Cs apply to every offer on this page.
Is it worth taking?

The welcome offer suits a new player who wants a defined set of spins and no wagering to work through, and who is happy to play the listed slots. The main strength is the lack of wagering. The downsides are the short list of qualifying games and the validity of 20 days, which means you need to use the offer within that time rather than whenever suits you.
The other two offers are for existing players and have no key terms shown, so there is little to weigh up before you hold an account. Treat them as something to read about when you get there, not as a reason to register.
It is less suited to a player who wants to choose their own games, or one who does not plan to play within the validity period. In that case it is better to skip the offer than to play to fit it.
A deposit is your own money and should be an amount you can afford to lose. The offer does not change that, and no offer makes losing less likely. Take it only if you would deposit that amount anyway.
