Billyonaire offer only one feature which is free spins. 3 or more billy symbols anywhere on the reels trigger 7 bonus spins. At the beginning of free spins the extra wild symbol is randomly selected and it could be any except billy symbol. Those bonus spins could be also retriggered.
Last time when I played Billyonaire, I got free spins twice. And both time the results were around x50 bet. I never won more than x100 bet here, but I like to play it because of those free spins. The extra wild symbols during free games are great, I like this kind of features. The main game is also good enough for me, I like when grand x casino wild symbols appears on the reels. They raise the winning combinations quite a lot.
Otherwise I think I will play Billyonaire more in near future. It can provide big winnings and I like it. Until now I never lose any money on it, every time when I opened it I got nice results from it. So for me it is one of my favorite game from Amatic software provider. I will rate Billyonaire with 9 out of 10 possible stars!