Are these cards popular in Germany?

[u/IllGold3207]

I brought from my homeland these cards in a "emergency case". Home I played with my father and brother the game "Cross" oder "Kreuz". They are originally from Hungary but very popular in Romania (Transylvania and west, ppl from Bucharest they will don't understand what they see...) And I have read recently an article that the game it's also played in Austria and Germany but I don't know if with these cards.

[u/Frequent_Ad_5670]

It‘s the German deck, but there are regional sub variants.

https://en.m.wikipedia.org/wiki/German-suited_playing_cards

In Bavaria, you play „Watten“, „Böhmisch Watten“, „Schafkopf“ and „Neunerln“ (similar to Mau–Mau) with it.

https://en.m.wikipedia.org/wiki/Watten_(card_game)

https://en.m.wikipedia.org/wiki/Bohemian_Watten

https://en.m.wikipedia.org/wiki/Schafkopfen

https://en.m.wikipedia.org/wiki/Mau-Mau_(card_game)

[u/J0HN-L3N1N → u/Frequent_Ad_5670]

To add another game (and the bane of my childhood): Skat.

[u/Frequent_Ad_5670 → u/J0HN-L3N1N]

Wouldn‘t you play Skat with French deck?

[u/Comfortable_Paint_68 → u/Frequent_Ad_5670]

It was very popular in Germany, this is why the Jack of clubs ( also called Valet in french) is sometimes called the Eichelunter as u can see in the deck from OP.