Minecraft and Factorio are definitely my top 2, after that it gets difficult. Probably Mario Kart (not necessarily a specific one, but if you’d ask me to nail it down it’d be Double Dash (for the nostalgia) and 8 Deluxe (currently best imo) at the top).

These are the only games I have consistently played for over a decade and that I keep coming back to in one way or another because I enjoy them so much. And that to me is the most important aspect of a game: my actual enjoyment of it