an angry bird one could be easily...(in a week that is)
but you have this forum don't you and you don't know whether it's a 12 year old with a ASWUM PWAN he just needs someone to do all that PWOGWAMIN... and frankly you often get that impression.
I do not mean to prejudge, but if I wanted work I might not actually say what I would PAY (on the forum) but I would be clearer on what I was after:
-A whole game from scratch?
-Is the game design done already?
-Do you want the art assets created as well, have you got the art assets? What format are they in so what kind of work will someone need to do to convert them?
-Do you require the games content as well, angry birds has several levels it's unlikely one person designed each level?
If you are not clear on these things (how much work), you'll either get fleeced or you will be doing the fleecing.