I liked the game! Easy to understand and play. I think the game could have benefited from some extra fun things like a distraction mechanic to influence the trainers, but overal, great job!
I did have an idea to throw rocks on the other grids to distract the trainers as well (the main reason why I added the mouse-highlight-grid system), but couldn't get to it in time. I will try to implement that post-jam!
