Long overdue, but I’ve uploaded the .tws source file for Solarium here: dropbox.com/s/tjuiha0umnx1a … y.tws?dl=0
A couple of notes: because this used an earlier version of Twine that doesn’t embed images, building the story within Twine won’t give the full game. So it’s not technically “playable.” This also has some dead ends and some earlier drafts of the ending in their own text boxes separate from the main story. Stuff that didn’t make the final cut, notes, etc. Hope this is useful or interesting to other writers or players!