I got the Windows version to open and run without issue, but I'm not sure how to progress beyond talking to Cenk. Going up to the building seemed the obvious choice, but I fell through the world while looking for an entrance. Alternately I tried heading out into the trees but also ended up falling through the world there.
If I'm missing something obvious, let me know! Otherwise I'll check back before the review period has ended to see if I have better luck then. :)
