Unfortunately my son was hospitalized and underwent surgery during this jam, so I'm submitting what I managed after around 3 days of work.
Due to this, it is not mobile friendly, and there is an existing issue with middle mouse button camera pan on this web version hijacking the mouse (use middle mouse again to fix).
You can merge 2, 3 or 5 of the same tier item to make a better tier (this was supposed to be temporary until I landed on how many to combine for the nicest experience) - it remains in the undecided state.
Discover how many creatures you can, I wanted a leader board but alas.. I may continue with this after the jam.
Thank you guys, I hope it's somewhat enjoyable!