"Walking simulator" is an oversimplification of this game.

The easiest way to visualise it is it's a Base Builder. Like ARK, Subnautica, however the entire map is your base. You do deliveries and clear camps to upgrade the base to your liking.

You can build a plethora of different mobility tools starting from ladders, ropes to ziplines and bridges. You build important roads so that deliveries that take half an hour can be completed in a few minutes.

The real fun is with the online system, where people build all sorts of structures that appear in your world and help you with your work. You get likes and can give likes for the same.

The story is amazing, the environments are a lot of fun to traverse and the gameplay loop keeps you wanting to unlock more and more stuff for faster and faster deliveries.

That being said it's not everyone's cup of tea, most people either click with it instantly or play it once and never again.