[Secret Squirrel]

Are you talking about Products or Platforms?

For arranged versions, I usually put all versions of the game that:

1. included the music represented on the album
2. existed at the time of the album's release

So, if an album comes out in 2000, it is fine to list the SNES and N64 versions, but not the Xbox versions.

"Other" is really only meant for obscure platforms that aren't in the list.