I came back to this to play it again because I liked it so much. There's two things I think would make it better: it doesn't get any harder after level 9 (stuck around 3000), and you can't see what level you're on. I think if you up the Ante (if that's what you call it) by 1000 (or even 500) after level 9 I think it'd be great. I've been getting 12-17,000 on every bet with my setup.
Also being able to say "I made it to level X" would be fantastic.
Really good game. I hope you update it after.