As more people have a PlayStation 3 now, I figured this would be more useful now than it was at the time, so I reposted it. The compatibility issue only applies to people with backwards compatible PS3s that don’t include the Emotion Engine.

Also, a few people asked about it anyway.

Originally posted March 21st, 2007

Sony recently put up a website for people to check the compatibility of PlayStation 1 and PlayStation 2 games with PlayStation 3:

PlayStation 3 Compatibility Website

Your version of Kingdom Hearts may result in problems but Kingdom Hearts II shouldn’t. You need to check your product code (found on the spine of the box or on the disk) first. Click to enlarge:

Kingdom Hearts Series Compatibility With PlayStation 3
PlayStation 3 Compatibility Key

Riku Edit: Apparently if you have the latest software update, codes SCES-50968 and SCES-50969 now run without problems. SCES-50967, previously unlisted, has minor issues. SCES-50970 still has major noticeable issues, and apparently SCES-50971 also does now too. Any codes beginning SLUS should work without issues.