What gives all of this so much appeal is the painstakingly-done art for each bug. Wasps are debonair commandos, flying into battle wearing velvet tuxedos. Bees have WWI-style flying helmets on. Grasshoppers have little green berets. Ants have plain old infantry hardhats.
Spiders chomp cigars.
Water bugs have big flippers on their feet that really slow them down on land. Moreover, each bug walks or moves differently, attacks differently, gets stunned differently, and dies differently. Ants really put elbow grease into it when they hurl bombs. Spiders trail puffs of cigar smoke when they walk, and literally turn into a blur of legs when attacking. Bees that get knocked out of the sky by rockets will stagger around in a circle.