I'm planning to do some RTAs of Vivaldia 2 in the near future. Could any moderator set up categories for Normal and Challenge mode, and clarify the rules for them? (timing to start / stop the timer, regulations for glitch etc.) Currently there seems to be no categories and rules, so I can't even submit runs.

That would be nice, but I feel that just having conversations here on the forum is enough.

In any case, the rule text should be drafted early.

Recently I made a run of PS1 version of Cu-On-Pa.

As you can see, there is quite a big difference between PS1 and SNES: you can move the cube during chain reactions on PS1. Due to this, times between the versions cannot be compared directly, so I think they should be treated as different categories.

ps: Also there is no "Easy" difficulty on PS version.