It is not only "maybe" but it is absolutely impossible for small gambler. There is indeed 1 challenge with $0,01 minimum bet and the prizepot is $1 only but the task is also something hard which is to hit 1,000,000x on x-roulette game. Hunting 1,000,000x needs a good starting bankroll, as it may take millions bets to hit it unless you are very lucky to hit it in few hundreds bets only. No one will hunt 1,000,000x just for the challenge, anyone who is willing to do it aims to get the profit from the bet only.