Sometimes the info on IMDB is wrong!
You can add “Unruly Heroes” because it’s French game (not USA).
“SteamWorld Dig 2” is from Sweden not USA. Fortunately first game (made by the very same guys) has correct country.
“Alt-Frequencies” is French game but IMDB says : “Germany | USA | France”. Nice order.
If you find any of my entries incorrect write it here. 
And sorry for not checking before which titles are at IMDB site - I didn’t know it misses a lot of games . This time i confirmed my list with database.