Say’s here 21 hours 30 min left of giveaway, but no sign of it at GOG site, only a big discount.
Went in via app and a spotty Internet connection first, showed 4:20 min left. Big mistake, got the runaround and failure to load.
Then tried giveaway page, but landed me in shop with no sign of free game, but as said, only discount was available (57%).
Conclusion : SALE HAS ENDED.