Yes, the pogo stick really is a prestige of the Keen games, but at least you need better reflexes to complete Keen Dreams. For me, Keen Dreams only has a different taste than the other Keen games have.
B the way, there's a great number of unofficial keen games and mods outside. Even I did one.
Try to intercept the Public Commander Keen Forum (PCKF) at Google. Their host server still has to be there somewhere.