50 mbc?? do you mean 50 mbtc? Do I need to place a bet to play the game, or I can play it for free?
Yes it is 50 m
BTC and since it is a freeroll , you can play it for free. Basically freeroll is a poker tournament which is free to enter for all.
It is a good place for people to start learning since there is no risk to that and of course the 50 m
BTC is the prize if you win the tournament. 50 m
BTC might be split into few winners depending on how many people joined the freeroll