Hmm, on medium, some levels have way to many nodes and on others it seems really hard...but I am missing a rising rate of difficulty...it seems all so...random.
Very nice game. I like it. Found a minor mistake. It should read "Unaussprechliche Kulte" and not "Unaussprechlichen Kulten". Remove the "n" at each end.
 "Z-Rox"){kind=icon}
 "Warlords: Heroes"){kind=icon}
 "The Several Journeys of Reemus: Chapter 1"){kind=icon}
 "Nodes"){kind=icon}
 "The Necronomicon"){kind=icon}
 "PlanetDefender"){kind=icon}
 "Red"){kind=icon}
 "Particles"){kind=icon}