Had trouble with the controls. I'm not sure if it was just the web version but I couldn't use the tool.

I enjoyed exploring though

This concept is awesome!  unfortunately, i couldnt get control of my mouse to seleect the options to interact and mess with the objects, i tried in the downloadable build and browser build.  I see in the video the mouse works fine  though so im basing most of my review off the video if thats okay.  The movement and gun sway feels nice, always love infinite jumping.  When it first started i intentionally didnt read the information because i wanted to try and figure it out for myself, which gave me a sense of wonder, mess around with things and see what happens etc.  After watching the video i got a good idea of the gameplay though.  The possibility space allows for creative ideas, giving the player the "dev tools" to figure out a puzzle can lead to some really interesting emergent properties.  Again im sorry i couldnt play the game to its full extent but i kept that in mind in my rating.  Let me know if im missing a simple issue and ill happily play again and adjust the rating, good job!