Question about commader keen shareware disk


Does this shareware disk contain all three episodes of invasion of the vorticons or just the first?


A shareware release contains - by definition of “shareware” - more or less always only the first of all the chapters. In this case it’s:
"Commander Keen: “Invasion of the Vorticons” - Episode One: Marooned on Mars"
…and not the fully registered version (chapter 1-3).