Is it alowed to create the "game" Windows installation, bacause it isn't actual a game?

A speedrun would be like this video:

Categories:
any%
any%(glitchless)

Read the game request rules.
Anything that falls under "Non-Video-Game Activities" will not be accepted.

This is stupid even as a non-video-game activity.

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Is it alowed to create the "game" Windows installation, bacause it isn't actual a game?

You answered your own question.