A deposit is required before withdrawing funds. Don't take risks.[
I don't know if this is something that is common in online casinos, but it reminds me of a classic scam ~snip~
This is a common rule of those casinos where the 'no-deposit' bonus is available. Some old and reputable casinos have such offer too, and users are required to make a deposit in order withdraw the winnings from the 'no-deposit' bonus. Anyway, it is risky to trust AnonBet.net with deposits at this early stage. The owner has created the website with a poor hand (cheap code). And the website has been down for maintenance since last few hours, which is strange.