Can the games on iPhone like Monster truck nitro work on a smartphone like Nokia x6 and N8?

do you mean hd games? Hd game do work on n8 not on x6.there are good hd games for n8|||NO! The Operating systems of these mobiles are differant than i Phone, i Phone uses iOS and Nokia uses Symbian. The game is not a java one so wont work on Nokia, but you can find a Symbian compatible version for that game at Nokia(Ovi) Store.