The same way you put PS2 games in by using legal PS2 or PS1 games for your region and not some foreign or downloaded game burnt to a CD
No you can only play PS2 or PS1 games on your PS2. You can also play DVDs and CDs
You can only do the PS1 games not the PS2 or PS3
No b/c PS1 has a CD drive and ps2 games are DVD No because the Playstation can not run PS2 games it lacks the computer power besides that the games are DVD and the PS1 is CDs as mentioned above
You put them in the game slot
You dont... PS2 games are DVD, while the PS1 reads CDs...
NO ps2 games don't work in Ps1 only Ps1 games works on Ps2
No, but PS1 games work with PS2.
games for a PS1 will work on a PS2 but will not be any better quality, and games for a PS2 will not work on a PS1 Yes. They can. But the graphics may not be as good on a PS2 as a PS1.
yes but you can't save the game unless you put the ps1 memory card in the ps2 slot
Yes the PS2 will play PS1 games
Yes if you have a Ps2 which can play both or, if you have a Ps1 you can only play the Ps1 game
there wouldn't be PS1 codes on a ps2 gameshark but since ps1 games work on ps2 you might be able to download ps1 cheats onto ps2 gameshark but it is doughtful since ps1 and ps2 gamesharks and gameshark codes are probably differant format