Okay, this is impressive. I really like that "build & run" system, it's a really neat idea! It reminds me of the "puzzle mode" of the old Trackmanias =p.
The controls are really good, the world editor is amazing, , the concept is fantastic... Yeah, the game itself is a little bit rough right now: the platforms are quite hard to see, there is no music and nearly no sounds... But come on, that's already a MASSIVE amount of work. How many days does your weeks have xD? This is impressive!
Do you plan to continue working on the game? I feel like that concept is severely underused, and I love that "world-building puzzle" genre!