Hi there @ahmadmanga thx a lot for the reply :P
The main idea behind alt coins it to have one for everything :D what gamecredits does is mainly trying to replace the app store / steam store.
I'm thinking more about just having a coin that is well advertised as being MMO related only :D not designed to sell games trough, not designed to do anything more than just be a currency with a name that expresses exactly what it is ;)
The main target, as with bitcoin, would be the guys that host private servers, the small fish, as to allow a side business of ppl with low capital and development power that still offer a great end product :D
Currently the private server scene has broken out, based on my personal experience, from the PC to mobile platforms, and that signals a market increase that ain't 100% legal (copyright related) and that could benefit a lot from a crypto-currency of it's own :P
One great use, that I can think of, is making a top that could reward players in crypto for supporting their favorite server ;)

Let me know if you have any other thoughts about it <3