I have the paid version and have never seen a popup advertising upgrades.

It’s definitely a slow start. The way it’s designed to allow discovery but not lead you too much makes the moments where points of data click and connect really powerful.

It’s hard to talk too much about it without potentially spoiling the enjoyment one might take from it.

But it’s not for everyone. But if it is for you, it’s really really something.

The Outer Wilds.

A game you can only play once and that one time is magical.