This is a suggestion to add the classic trick-taking card game Doppelkopf to BGA.
It's a highly strategic, relatively easy to understand but hard to master card game. It is similar to Skat, however it needs (exactly) four players. Also, it doesn't need licencing.
The game is very popular in Germany. If you are unfimilar with Doppelkopf, you can check out the wikipedia page here: https://en.wikipedia.org/wiki/Doppelkopf
It's a highly strategic, relatively easy to understand but hard to master card game. It is similar to Skat, however it needs (exactly) four players. Also, it doesn't need licencing.
The game is very popular in Germany. If you are unfimilar with Doppelkopf, you can check out the wikipedia page here: https://en.wikipedia.org/wiki/Doppelkopf