make money by just playing games

hello friends..
wht abt earning money for just playing games ???
just like this site,there r sooo many site which make money from online advertising...for traffic they make online game with cash prizes....they earn from advertisement & soo they pay u 4 sure...these r two such sites..
http://www.exodus3000.com/?r=neha20




http://www.wealthwars.com/?r=neha20