I'm enjoying Icarus. The big thing with it unlike a game like Valheim is it's session based. You drop down onto the planet, you got x time (everything from 6 real time hours to 30 days) to complete some objectives and then you blast off. No persistent base, you do your job and then get currency to unlock things that make the next job easier (axe, armor, move speed, etc). I play it with 2-4 other people, the first person to join an established prospect (what they call missions) is the host and then it's just a peer to peer game.
Being session based also lets some friends just join for a prospect rather than joining a Valheim world you've spent 100 hours on. Icarus does have a persistent 'outpost' mode on it's own map you can build on indefinitely, but don't really enjoy that as much for a few reasons.
You can speed run the missions if you really want, or you can chill and overbuild and do them at your leisure. As long as you don't miss the real life timer on every mission - if you do your character is deleted.
In the last week or so I passed my total playtime in Valheim (145h) in Icarus (163h).
Will drop a couple screenshots and bump the Icarus thread -
Icarus (Survival, Rocketwerkz)