Hehe! Yes, that's kind of the intention. I just hope to pull it off. The game won't be 20 hours long (probably), but (hopefully) rewarding for playing it several times. There will be entirely different play styles, approaches, reactions, and experiences, although the core story arc will always be similar.
My estimation for the length... really depends on your reading speed (hehe) and how deep you will engage. Act One's main story will be like 5-10 times this Prologue, only with more side interactions. The Prologue will be richer as well. For example, there should be some kind of news feed on the computer, more exploring around the office, etc. All not necessary for the playthrough, but more to meet the world and the characters.
Act 1 will be available on all applicable platforms, eventually maybe even mobile. Still, at this point, there is only Patreon and itchio. I'll rework some of the Patreon tiers to give more exciting rewards like adding your character to the game and so on.