Wow this is a great concept. Really creative variety of puzzles :)
Thing In Itself
A downloadable game for Windows and macOS
August 2016 🍒UPDATE🍒: Made that one too-hard level a little easier!
A toy, a treasure hunt, and a tiny bit of philosophy. Made with LÖVE for #LOWREZJAM 2016
The .zip files contain executables for Windows (64b) and Mac OSX.
The .love file can be run after installing LÖVE, found at https://love2d.org/.
April 2018 update: Sorry, but I have to hide the .love file as it will longer work with Löve 0.11.0. The Windows- and OSX-specific executables should still work.