The other I saw a post like this, is it possible to play full screen???

i think so but it would be realy bad quality

Generally not with a browser, if you were very good at tinkering with code then you could, but it would be very poor quality.

I heard people say you change your screen resolution, but quality would be dung.

Right click on desktop->properties->settings->screen resolution to be changed 800x600.

 

 

 

Yes this is full screen, but you will be at a higher disadvantage when pking\killing monsters or anything that allows for fast action because the distance between everything is enlarged, but your mouse stays the same.