Too easy(hard mode?), gues its all about loosing as few lives as you can.
Upgradeing better towers is useless - should be more balanced(lets say upgradeing should be crucial when there are fewer good spots to place towers).
Overall a decent made game, but lacks something which would pull it off the crowd of other TD. 3/5
yay, managed to eat some bats:P
pseudo-code for later levels:
If player eating butterflies then spawn 3 fireflies and spawn 2 queenbees
or
If player managed somehow to rebuild his nest spawn 3 stagbeetles, 2 fireflies and a red bat
:P
only annoying thing is that sometimes your net collapses when it should not...
great game;]
great game!;]