PVP Games is an awesome idea, especially if you can withdraw after each game, so you don't have the risk of the website just disappearing.

Rock paper scissors as an online game is a good start, but it could get boring very fast I believe. Have you thought about adding more games, something like "Connect 4" could be awesome. Or maybe a small version of battleships. Its more work to implement on your website but offers a much wider variety.

Did anyone play already on the website? I would definitely like to give it a try but was hoping for some experiences first.