You can give Simple Rockets 2 a try in the meantime. It uses fully customizable procedural parts (wings, fuel tanks, even engines) instead of premade parts like KSP, it looks a bit nicer and it includes a visual programming environment for your spacecraft (e.g. you can build a SpaceX-like autoland routine).
I've never tried Simple Rocket, could you compare it to KSP? At a glance, it seems more serious than KSP while KSP has a "fun" edge, but besides that they seem more similar than not.
Toutouxc|4 years ago
capableweb|4 years ago
Cthulhu_|4 years ago