My absolute favourite is Spirit Island. A co-op game where you work together defending your island and kicking out explorers and settlers. Expanding your presence and getting new powers along the way. Every game with new combinations.

When we got the game we played this more than once every week for over a year. With each game taking 1-3hours with our playstyle. Sometimes longer with four players (but that’s partly because of not actively playing the game then). We play less now only because of moving with the renovation taking too much time.