I have a Backup copy of Hypnospace Outlaw pre dylan tag removal from the Outlaw page would i be allowed to post a speedrun using that copy? other than it being a backup the game is original,

Interesting edge case - for now I'll give the go-ahead.

I myself run on the oldest version of the game (v1.04 I think? It's displayed on "boot up"). I have it via itch.io so have the old download from that; you usually can downgrade versions of games on that using the itch.io app, but it doesn't seem to work right now for this game. I've posted in the official Discord and maybe the devs could help us.

You can also download an older version on Steam although so far for me this takes a while because the download speed is fluctuating a lot.

Technically the game is DRM free from what I can tell but I'd rather be able to downgrade officially instead of having to share copies of the game.

EDIT: My Steam 1.04 did finally finish downloading, it seems that the itch.io 1.04 is a slightly older build even though it has the same version number, not sure how major the changes are but I think it's some minor cleanup.