For my second place Flubber Mountain from Mario RPG is a banger! https://youtu.be/FaAc87l3o3o

Civilisation IVs Baba Yetu. Still gives me chills. I’ve seen it performed by a small choir and is just as good. https://youtu.be/IJiHDmyhE1A

I’m probably alone in remembering this game but I loved Hardwar back in the day. It’s an Elite style trading game set on Titan. The player pilots a ‘moth’ ,a small flying craft, between craters.
It had an interesting story that played out as you explored with areas blocked out, due to events, and made accessible later on.

The developer closed doors but IIRC at least one member of the team released a patch that had been developed later on.

I played it pretty obsessively and it had a small passionate community but it wasn’t a hit.

I think I would have to go with Stardew Valley. It has something for any mood I’m in.

I can spend my time on the farm, looking after the animals, crops, reorganising. I can go and be social with the neighbours, help them out, do some work towards the community centre. If I feel adventurous I can go explore the mines fighting monsters.

Where I’ve done all that I can start again on a new farm and try a different strategy, I can even play with friends and work together. Its just cozy fun.