Difference Between PlayStation1 and PlayStation 2
PlayStation 2 has more games and superior graphics to PlayStation 1. Unlike PlayStation 1, PlayStation 2 also has DVD and audio CD capabilities and can connect to the Internet.
Reasons for Incompatibility
There is a small list of PlayStation games that cannot be played on the PlayStation 2. This is due to updated software on the PlayStation 2. The software is different in that some features have been discontinued.
Other Issues
Other reasons for this incompatibility include the lack of PlayStation 1 peripherals needed to play certain games on the PlayStation 2 and memory card save issues.
Incompatible Games
PlayStation games that are not compatible with PlayStation 2 include: Arcade Party Pak, Atari Arcade Greatest Hits, Fighter Maker, Final Fantasy Anthology, International Track and Field, Judge Dredd, Monkey Hero, Mortal Kombat Trilogy and Tomba.