i haven't played superhuman, and the description and preview images doesnt make the game appeal to me (the shapeshifter game?).. but i'll give it a go sometime seeing as you seem to think its good.
companion of darkness is in my collection already, a great game, but not in my top 5, probably in the top 20. only cos its a bit too much like a 'become a god' plot for my tastes. my favourite "become a god" game would have to be Love of Magic