Does the full game have to equal to an hour, all routes included? Or does just one play through of the game have to equal up to an hour and going back through the other routes through different playthrough not include to the time?
I would say the intent of the 60 minutes is to keep games in scope (and also make sure I have enough time to stream them all on my schedule) so yes, the game time is one main play through, not counting other routes. If you manage to have multiple under the time limit that's also fine! I'll add a question to the submission in case other people have the intent of the game being played multiple times for the optimal experience. As long as it all is around 60 minutes (give or take a few) is the main thing.