This was pretty cool. Didn't get very far (The largest thing I made was a fishing rod) but I liked how the "tech tree" expanded.
I think knowing some baseline information would have helped in terms of what needs to be combined with what so you can plan out ahead of time instead of having to play around what recipes your slimes get.
It took me a while to figure out how the slimes and bushes needed to be aligned in order for them to actually transfer materials to one another. Initially I thought the barns were storehouses where the ingredients were getting stored and not a means of making money, so I was trying to funnel all the level 1 products into the barns. So I had lots of money but no actual progress.
I think a mouseover menu would be a lot more streamlined compared to having to drag the slime out of their work spot and back again.