No problem, even if I didn't get the rules, I did enjoyed the game in the end (couldn't beat 19/10 bcz my win was so high game lagged and crashed ~356k on ~14:1 field bet without counting all multip.)
Additionally not sure why you can place chips anywhere:

Could also recommend:
- to signal what bets are winnable/losable when you hover over bet with chip in hand, not after you placed it (like little glow over numbers)
- show all betted money on any number
- repeating previous bet (for one tricks :) ), maybe even auto roll if you are bold enough.
- maybe add turns to beat so you can't slowly beat level (especially in endless mode)
Good luck with your gamble!