i have seen there is a lot of people who claimed have got hundreds bitcoin from bitcoinvideocasino slots jackpot , but it never happened to me unfortunately. also at fortunejack there is player who won $10,000 jackpot and user kweniboo earn 160 bitcoin in 2015 just take a look here https://bitcointalk.org/index.php?topic=774929.700 . slots always have big prize! but of course with big risk.
160 bitcoins wasn't that much back then but if he kept those till know, damn he's rich!
I also dream to win big, but to win big you need to bet big. That is a pretty hard trade off.
I am not a high roller, so I will never hit the big jackpot.
I think it is not the high rollers that have the possibility to hit big jackpots. Sometimes there is news in different gambling casino that some low rollers had won a jackpot though I am not one of those lucky guys. I had never won jackpot prize maybe because I seldom play gambling games and I never meet the chance of winning the jackpot on the game that I am playing.