Gosh I wish I could make this full screen on the site! This is gorgeous!
Simple and to the point, loving the concept of switching together and have your Stonelings work together one Stoneling at a time!
I do find it odd though why you do need to hold the W key just to switch Stonelings when for the most part all of them are within click range.
…but it seems this is a demo and definitely has some potential to be a full experience! I sure hope your plans come into fruition then!