Great news, guys: this challenge, ran by the amazing community manager, Mina, will not be over for the next 6 days. There are more than 30 entries already, so the prize pool will certainly over $350.
I did try, but had had pretty poor luck with this one. It's not unusual for me to hit something like 198x from the very first several rolls, yet for some reason this time I was unable to win with 66x multiplier for many rolls in a row.
But I'm glad to see that so many players(60+ so far), have succeeded in it. Not only they hit 66x, but all of them had 66 in the bet ID. Good job!