Recently i registered and deposited 0.1 BTC to BitcoinBev Roulette and i withdraw 0.6 BTC. Great.

This was 1 week ago, yesterday i deposited 0.5 BTC and played whole night and again i had 0.6 BTC, this morning i wake up and see +0.25 BTC in my account,  0.85 in total, so i guess this is 50% BONUS for my deposit, i haven't seen any information about this and it really surprise me.

Anyone have some info about this, is this new BONUS? is this working only for 0.5+ BTC deposits?