Are these any good for ps3? worth to buy?

May be...

fdaallout 3 killz zone 2 resistance and mention any other games that would be worth my money i got cod5 already

yeah they are except i think you should get killzone 2 on a price drop i mean its great but not worth all that hold off on that but the others are great

killzone2 and resistance are amazing

You really need to get Un chanted it is the best game known to man.