The fine print on the site state that if more than 1 player is left on December 31st then the main prize will be split among all
Yes, saw that after posting but edited to include that. It's about 120 days, a month more than the previous one.
Anyway the rule doesnt really specify about the 5mbtc wager. Do I need to wager 5 mbtc in a single bet each day or can I split it to 5*1mbtc bet? I didnt join the first one so I have no clue about this
You can even do 0.01 mbtc wagers 500 times, it'll all count. There are plenty of tables with low min wagers. As leea mentions above, your daily stats are tracked in history so you don't have to keep track manually. As soon as your daily total hits 5 mbtc, you're gold.
Barring totally unlucky streaks there should not be big loses. You basically spin the same money all the time.
I actually did quite well last season's edition on Blackjack, betting the same wager on my main hand and side bets (I believe a 6 card dealer bust pays out 40/1 or something). It's the doubling down to chase losses that killed my balance once or twice, so tempting when you think "I've lost 6 hands in a row, surely a win's coming?".