JoanieS

You don't have to wait until Five Cores appears on Steam...you can get it from the developer's web site now Buy Five Cores

Why not try pressing other F keys like I did.

Instead of pressing Esc I hit F1 by accident and figured something was wonky.

Just played the game for like an hour.
It looks good and atmospheric.
Though I've explored a lot, I cannot say I really solved anything yet Or if I did - I didn't really realize I was. I cannot judge the puzzles yet...

I agree however that the game is rather buggy. I had to restart it for about 5 times after getting stuck in weird corners I can't get out from (yes, I'm snooping everywhere!)

Anyway, respect for the beautiful work -- let's see how it develops.

(I have to say though, despite the Myst vibe, it really isn't close to achieving the depth of Myst, story-wise so far)