A follow up to Randal's Monday is in the make

https://www.kickstarter.com/projects/randalstuesday/randals-tuesday/

At this point there are 19 days left

They already reached the basic goal, but some more funds for more riddles definitly would not hurt.

The devs said that they will definitly try to go on GOG again (in the end it's always also GOGs decision).
So make sure to also leave your vote in the community wishlist

https://www.gog.com/wishlist/games/randals_tuesday_nuclear_tales