Here is my problem...I want to make a card game that can run on a web server and serve 'x' number of clients that is mostly platform agnostic on the client end (i.e. Android, IPhone, PC, Linux). I was thinking about writing a web service to act as the game server itself and then have 'apps' around it for individual platforms so that users can play the game on different devices. What are some ways I can structure this? What languages and APIs should I consider? I want to make the clients as thin as possible.
I know this is vague but any input on how to get started would be appreciated.