I found interesting website:
http://slot-machines-how-to-win.xyz/This website analysing slots games and sort them on winning and no-winning.
Never i did not see similar website!!
All gambling websites on internet they say all slot games is win, get play!!
Just a click-bait to make some money off advertising.There is no such strategy or a type of machine which can be analysed to predict a definite win.The case is about different in a bitcoin based Slot machines which are actually hard to win.The famous websites are independent of the machines as listed out in that page.