Is PS1 version of game allowed?

Sorry for taking long to reply,

I must admit I've never played that version myself. For what I saw from a video in youtube the game seems to play a bit different comparing to the PC version. Can you tell if the runs are comparable?

Well it runs slower and loading times are bigger there's not so big difference just little bit slower and harder

I looked up to it a bit more. I think if one wants to run the PS1 version, it should have it's own page in speedrun.com. The games are too different to have runs in same category.

Well Its true that its different from original so it should have be like PC and PS1 like on GD it has PC and Phone category in own runs