No duh ps2 will work on a ps2 and PS 1 gamw will work on a ps1 and ps1 game work on a ps2
Yes. You can also trade them to GAME
Games are not converted. The new software must be written and tested. It is expensive and few games are ever released and never without modifications and improvements to the game.
Yes of course. If you mean do PS3 games work on the PS2 then no. PS1 games do but you can't save them without a PS1 memory stick.
the internet