Very fun idea, it could be like the next agar.io.
Suggestions:
- Make parts more expensive the more you have, I was able to get a lot of DNA and just make myself a giant stone slab.
- The dropdown was not obvious at first, I expected to press the [+] and have it pop up options.
- The [+] never went away so it was getting a little annoying having a bunch of ghost hexagons on me. A second click would be good to close the menu.