Board Thread:General Discussion/@comment-1312012-20161212132314/@comment-1013969-20161227143601

It matters because the whole premise of Hypertime was that timelines could briefly merge and we know that some stories (and suspect others) were set in hypertimes. The biggest of these is Earth-Thirty-Two (better known as the Earth-B dumping ground) though you also have Earth-Forty.

DC Heroes is no better as even in the 3rd ed it talks about Krona's experiment in Pre-Crisis terms which Green Lantern: Ganthet's Tale had invalidated a year previously.

The detailed Whos Who for that game came out in 1992 by which time the concept of Earth-One and Earth-Two were deader then the preverbal dodo.

As I said before I seriously doubt that DC Heroes 1st edition went into much detail about the pre-crisis DC multiverse and certainly not to the detail we see in the Crisis on Infinite Earths: The Compendium. Never mind it is insanely hard to get ahold of.