[InsideOutSanta]

That's interesting. I always assumed that UNO was a branded version of a very similar game we used to play as kids with a regular deck of cards (e.g. 7 is draw 2, Jack allows you to pick a color). The game is called Tschau Sepp and very commonly played in Switzerland. I just assumed other countries had their own version of it, and that UNO derived from it.

[n_plus_1_acc]

Called mau mau in germany

[jaapz]

A similar game called "Pesten" is played in the netherlands

Would not be surprised if there is a version of this game everywhere decks of cards are available