Yes the games for the PS3 is different from PS2.. the games of PS3 is based on the BlueRay.. but PS2 is not.. before when PS3 first came out.. the consoles were backward compatable.. i think it was only 40GB version that was compactable with PS2 discs, but still had some problem with the reader..

the PS3 you get in the market these days are not backward compactable.. it only supports PS3 CDs..

If you can afford the HDMI, HDTV, BlueRay Movies and PS3 games with some WiFi in Nepal, then you can send PS3 to Nepal.. Else just keep it to yourself..

Just my Thought..