Love it. Agree: make a tablet version. o make more levels you could take advantage of your fluid/physics and find a way to make the squares move more in the area where you click: so that where you click is more likely to shake loose the isolated squares. SO the player has two tools: choosing which color to switch to and choosing where to click. If you do not add a second tool for the player, your puzzle will stay the same and all you can add is more colors. I love that you have added the dynamics and that you can tae advantage of it to make a new kind of puzzle!
We are planning many changes. All of your comments here are consistent with what we see at expos and in our play testing sessions. And what we feel, too. We're working on making that game play more clear and therefore the fun is more obvious. And then we're going to add all the the more complex interactions between the different types of cells and the many many different pathogens. We need to re-code a lot, in order to make these changes and future iterations more efficient. So it will take a little while. We have an IndieGoGo project going and our company website is MolecularJig.com.
The learning comes when the teacher has a lecture the next day on oxygen, hemoglobin and the delivery of oxygen to muscles using a molecule that keeps circulating through your bloodstream: two words and an abstract concept that you know already! This is an excellent example of a learning game!