Does anyone know about no deposit bonus codes? I see such offers all the time, but I don't fully understand what the catch is and how to use them correctly. Is it worth trusting such bonuses, or is it better not to bother?

Yes, such bonuses are a classic. In fact, no deposit bonus allows you to play without investment: you just activate the bonus code, fulfill the conditions (usually a wager and withdrawal limit) and you can take your winnings. The catch is most often in the conditions themselves - sometimes they can be complicated, but in general it is a working scheme. Here, by the way, you can look at an example at Marvel Casino: https://askbonus.com/bonus/marvel-casino-no-deposit-bonus-15-free-money/ It's all explained there, how to activate and what you need for this. If you read the rules carefully, you can catch some good luck.

And how do you know if the conditions are adequate? Are there any points to pay attention to before activating the no deposit bonus?