Thanks for letting me know this is out! I still enjoy the mix of cute robots going about their day-to-day lives and wickedly hard puzzles. Too hard for me at the moment- I'll give it another go when I'm feeling less tired.
Also, I'm not saying that the lack of sound is an issue but I actually searched on the internet for music that would work with this! Soundimage.org>Techno>Friendly Machines sounds great in the background. It's royalty free but you'd need to credit the composer, Eric Matyas. Also, Freesound.org is great for SFX (but check the individual copyright details).
The amount of work you've put into this is incredible- but don't feel you have to do everything yourself :)