The demo for the upcoming Destroy All Humans! Remake is now available on PC via GOG.com. You can check it out now and now and download it here.
An excerpt on the game’s GOG page states:
Destroy All Humans! was originally released in 2005 and published by THQ. It has since gone on to become a cult classic. THQ Nordic announce a remake of the game in June of 2019.
Destroy All Humans! Remake will release on July 28th for PlayStation 4, Xbox One, and PC via Steam and GOG.