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.
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).