Space Engineers doesn't work out-of-the-box on Linux. But you can right-click on it in the list in Steam and check the box that says "Force the use of a specifi

Space Engineers doesn't work out-of-the-box on Linux. But you can right-click on it in the list in Steam and check the box that says "Force the use of a specific Steam Play compatibility tool". Then select a version of compatibility tools from the list and see if it starts up. For me, it started fine with 4.11-13. There's also a room in Keen Software House's Discord which is dedicated for unofficial Linux help. Sometimes a patch will break the game in an unexpected way. For example I remember a patch early this year that made it so that the version check would crash the game on Linux (something to do with KSH's HTTPS certificate) and the easiest solution was to just null-route the patch server address in iptables or blacklist the domain in pihole until a later patch fixed the problem.