I love this character controller. It moves really fluently, the speed and jumping distance feel just right. The only things which break the movement flow are the trampolines which are slightly trickier to use.
I'd love to see a full-length obstacle course or a platformer, something like the v1 you posted earlier, but longer. Walking down/up the stairs isn't as much fun as moving horizontally.
In both of your games, I can't move when I start the game, until I press space and refocus the game window. Only then I can move.
I also thought there's a bug that you're still being hurt when moving after falling to your death, but the actual bug is that the fire at the top wasn't visible during my first playthrough.
I'd also really enjoy being able to drop all the way down to the ocean if it wasn't just background – and since this game is all about jumping down, I guarantee most people have tried.
I'm not aware of the limitations of HiberWorld though (first time I hear about it), but even from what I see here, it has more potential to get creative.