Axis and Allies. Used to play the tabletop with my friends. Recently my friend got back into it and has gotten us all on board again. We are playing the open source variant called "TripleA". We can all play via the internet so we don't have to meet up, which is good because we are spread very far geographically speaking, and we all have families, and it's the pandemic. It has lots of customizable features too, you can make your own maps, make your own units, change rules, etc. We are all playing a version my buddy made with new units for each country.