Let's say for example, I created a game and I want it to be played in a gambling site? like who should I contact?
Meet various casino owners online or offline, discuss with them to be your advisors to direct you to a developer that will rewrite your idea into a script while developing it. If you ideas are many, you are liable to set up your casino companies, if your idea is only one, maybe a better casino company can acquire it and develop it into theirs.
Having your own casino site requires money, team, experts and more to think of.