Thread:CheeseBurgerGuy/@comment-28092650-20191128141610/@comment-35606925-20191201194739

If it wasn't for Dialga and Celebi already being a thing, I could see them doing it. My guess is that the main game would take place in the present. The evil team, Team Timeout, would have one of two plans depending on the Version.

Plan #1 (Pokemon Past): Changing the Past to Make Themselves More Powerful in the Present

Plan #2 (Pokemon Future): Gain Knowledge from the Future to Change That Future Eventually Into Something They'll Desire

Each version would have maybe two or three unique mini dungeons or mini Wild Areas for whenever you time travel (only happens at predetermined locations).

Version exclusive Pokemon would be Pokemon found mostly in those version exclusive time periods.