Are you kidding? Never heard of a casino offering 200% first deposit bonus unless they have a high rollover amount to achieve it. To be able to cashout double amount of what other casinos offer for their customers on the first deposits as a bonus.
Expect on it,whenever theres a bonus there would be always a wagering requirement which is 30-50x usually on slots but thats for 100%
but for 200% bonus then it would be possibly on insanely 100x wager requirement.For sites design its quite attractive.