Well, if one Kickstarted it, then one has already paid the associated cost. If one just wants to get it off of Steam now, it is still reasonably priced. And none of the characters of homestuck are 'in it', persay, but several are still directly referenced.
its been a year since anyone's commented on this, and ive only just gotten to jude's part, but the humor is very in line with homestuck and the references to the 90's are killing me