The author of Tin Star also wrote Marine Raider and The Shadow Horror. Marine Raider is rather short but packed with content and stats checks. It’s very different from Tin Star, though. I haven’t played the Shadow Horror, but it seems to be a fairly long game, so if you’re really interested maybe check that out.
He’s also working on a WWII game where you play as an American tank commander. It’s not really like Tin Star because there isn’t much story or character interaction, but there are a lot of ways to react to situations. I’d definitely recommend this one if you have any interest in World War 2.
Lastly, he is working on a non choice script game called Burden of Command. You once again play as the captain of a group of soldiers in World War 2. It isn’t out yet, and there isn’t any release date, but it seems to be aiming to accurately explore the tolls of the war on the soldiers who were fighting in it.