Really, REALLY bad. Been playing here, & the other 3 (Davinci's Gold, Paradise 8, This Is Vegas) for nearly a year now. The other 3 casino's I mentioned, after the smallest of win's/withdrawals, completely stopped the bonus offers - & the supposed 5 free spins for a year. So I didn't even bother with them anymore.
Stuck with Cocoa as, foolishly, I honestly thought that maybe after all the depositing I'd done over the last 10 or so month's in all their casino's - literally 1000's, & seeing as they're all tied together - I surely must win something at least big'ish at some point...but no.
The game's are great at the beginning, to be expected, also you expect that as time goes on, you'll have to put it all back in - plus more - in order for the game's to have a chance of spitting something back out...yes? No, well, that's not how it works here, honestly I've grown to absolutely LOATH Rival Powered Gaming software - loath it!
Endless, literally endless dead spin's, the game's don't behave as they should & more than once I've been kicked out mid game, reloaded it & it's, no word of a lie - dead spin, after dead spin for literally hundreds of spin's - absolutely crazy. Deposits gone in minute's, absolutely abysmal payouts, if any, the free spins are the absolute worst I've EVER experienced in all my years of slotting, & to add insult to injury - the more spins you acquire in the game...99% of the time the lower the payout. Absolutely, positively AWFUL. I've also researched most of the game's info on various site's & considering a fair few of them are supposed to be low - medium variance, you honestly would never know as they behave as though they're high to extremely high. You never, ever end up going above your starting balance, it hovers for a while, they gradually you're down to zero in no time. It honestly end's up feeling like a chore, a battle to try to at least reach your starting balance! Crazy, weird behaving slots, little to absolutely no chance after a month or so, if that, of meeting wagering & getting the chance to cash out.
Talking of which - you'll be waiting at least 8 days for. The first time I cashed out, 3 day's, "great!" I thought....but after that it just got more & more lengthy, to the point I had to complain on a forum in order to get heard as the CH's are absolutely useless.
I absolutely KNOW it's my own fault for playing, but I can honestly, hand on heart say that these shysters have turned me off gambling for life. I've wasted so much cash, hoping not just to win, but to have fun - it's ended up a frustrating, anger inducing experience. No fun at all when your deposits disappear in literally 25mins, if that.
I've withdrawn - from all 4 of their " Fab 4" (yeah right 😏) casino's the approximate total of around £750 - that's it. I've deposited, like I said above, in the 1000's.
The chat host's are rude too, obnoxious & can't be bothered to deal with anyone...I know this as the constant theme & complaints from other forums/review sites etc regarding these casino's are ALWAYS the same. Always complaining about the lack of decency & respect from the customer service.
The manager (won't mention his name) constantly, pops up on forum's too, telling everyone how fantastic his casino's are, how he's been in the business since 2006, sweet talking all who'll listen. He's a con artist, with a smooth tongue.
Anyone planning on using these casino's, please, PLEASE be extremely careful. Be mindful.

Edit - It's Ltjs15. I appreciate the gesture of a chip, but I doubt anything'll come of it tbh.
You say £750 is a significant sum - but when you make SO many dead deposits, I'm sorry but it does make me more than a little suspicious.
EDIT - Well, it's been a while since I wrote this review....& absolutely nothing has changed, nothing. Dead deposits EVERY. SINGLE. TIME. The game's just don't pay - at all. No way of clearing the wagering, no chance, & I honestly don't trust the game's enough to put in a straight deposit - so I guess this is the end of the line for me as it's only common sense to just give up.
Absolutely abysmal to be honest.
Edit 18th November - Apparently, though I don't believe it AT ALL, they've been "taken over by a bigger company" .... I believed them at first, but then I checked AffDynasty & they're still in charge & also a pop up "Crazy Winners" comes up when you log in asking you to install their app. I looked into them & yeah, basically same old, same old. There honestly doesn't appear to be ONE decent Rival casino literally anywhere - it's crazy. I told them to shut my account as I absolutely hate them. No joke.