Of course you can. All models of PS3 can also play PS1 games with software emulation. Some models, however rare nowadays, also support PS2 games. nO OFFENCE BUT IT IS OBVIOUS. CAN A PS3 PLAY A PS3...
it should be able to play ps3 games, but if the blu-ray ability is defective then it wouldnt be able to play ps3 games. You should go to best buy or wherever you got the thing and ask for a checkup....
Put the disc in, go under the game section, click the game you want to play and boom that's how you play. OR if your settings have it that your game will start automatically then put the game in boom...