All of the levels are a matter of getting the most nodes possible early on and being risky. You can't afford to be too conservative, level 12 is hard (took me three attempts) but it's definitely solvable.
Good game nonetheless, more levels and a few extra features (e.g. special cells with certain traits) would seem to be the way to go in future development.
 "Morningstar"){kind=icon}
 "Zilch"){kind=icon}
 "Nano War"){kind=icon}