Mars First Logistics, an open world Mars colonization game where you can develop and control vehicles (rovers, flying vehicles) to make money completing construction projects, released on Steam.

I've played quite a lot of this on my steam deck and it's a lovely game! The building isn't too finicky and lets you do most things you can think of.

Just played for an hour. Fantastic little game.

Welp there went an entire weekend day! Thanks!

Looks right down my alley to be honest