I am looking for a simple card game that would be fun for the elderly and at the same time would break the monotony of traditional card games, that they are currently playing. Preferably something internationally popular so it is easy to buy in the EU.
Second Love Letter. You can learn to play in 10 min, a game is over in 20 min, but you’ll play for hours. By name, it doesn’t grab you (me, anyway,) but I genuinely don’t know anyone that doesn’t like it. Also, Sheriff of Nottingham
Both of these break the traditional mold, are crazy simple to learn and are way more fun than they have any right to be.
I introduced Love Letter to some friends and we all had a blast playing it during the lockdown. Before playing it sounds kind of bland and unstrategic, but the more you play the more tactics and things to look out for you see (like the closer you are to the ending the more likely someone is holding the princess).