Landing on all of Jool's moons with a 6 ton spaceplane
15:07
KSP v1.5: Single stage, nonstop trip to Eve and back: World first stock, unrefueled SSTK from Eve.
13:03
2.0 tons to Moho and back
22:39
Ludicrous range SSTO to Eeloo... and more!
10:19
2.998 ton manned launch to Duna and back
23:32
Journey to The Center of Jool | KSP 1.12.3
10:38
Solid rocket fuel SSTO to Minmus
28:09
The DARK History of Kerbal Space Program Shuttles
34:47