If you will look in the scam accusation's board, you will find this site listed in the scam website list. I remember friends saying they've lost their entire balance before. So think before you play in this site.
there are too many accusations,too many questions without answers (look at the OP trust)
their probably fair is not fair at all,at least when you are not looking
they used to rain copious amounts of satoshis to people in chat with a so called "button" that would rain up to a couple hundred thousands satoshi
show me a single site that could afford to rain amounts like that on a daily basis?
it is up to you to try your luck at 99dice or not,but if I were you I would avoid the site and gamble at one of the trusted and
provably fair sites like bitsler,primedice,bitvest and so on