Bitcoin users are used to the games that already existed and i think all games are already here from sports to simple game of luck like dice. IF you can create a real time game like a video on a corner where we get to bet which color of a car that will pass by each minute, we might just try betting on it. I don't have any idea whether such game already exist here in bitcointalk but i do hope you can have it on your site. Also allow us to bet using some altcoin like LTC, ETH and rest.