Probably not everyone’s type of game but the first time I got into orbit in KSP. Doing it manually was a huge challenge and the first time I got into orbit not to mention later when they added the mun and I landed and returned to kerbin was a awesome feeling . When they added other planets and later when they added asteroids it was still a great feeling to do it without mechjeb. Of course that was in 2011. I have more hours in that game than any other and I still play it for few week one or two times a year.