here is my idea for a gambling game site.
the game would an STG Bullet Hell game, kind of like Touhou Project.
for those who don't know what that is, here is a video from one of the official Touhou games.
http://www.youtube.com/watch?v=6JQNkhcAqKINow, the idea I had in mind is that the site user can start playing right away, for every enemy the player destorys, he or she will earn a random amount of satoshis, maybe even a bitcoin, depends on the difficulty of the enemy. If the player gets shot down, he or she must use 1 BTC to continue playing or choose to quit. The challenging part is the amount of projeciles on the screen that the player will have to dodge, as you guys can see from the video.
I hope my idea would become a reality soon lol, I love these kind of games.