the game on mobile was my jam back in the day! shame the lag is awful on newgrounds

the lag is unbearable

Pretty good, but the version on mobile is better

O_O

Infinitely better than the relic of war.

Even with the premium content in the game, it's still very much playable and balanced.
The pixel art style and the audio are both great, the gameplay is enjoyable and the upgrade progression feels satisfying and effective. And the AI isn't horrible. I'm currently replaying the game on new game+.

The only real issue with the game is the lag once there are like 75+ people in a level, but not maximizing the window (I'm playing on newgrounds player) & lowering the settings kinda solves that.

Edit: I just "finished" playing new game+, as I expected, some cities are literally impossible to destroy (Santa level & Secret base 2), I literally have maxed out upgrades and the hazmat/soldier/secret agent spam just makes those levels impossible to beat (without supports, I couldn't even beat the secret base 2 with a bunch of supports), no matter what special squads you bring. Destroying the National Park (Canada) was also basically just RNG because they spawn on completely different sides of the map (3 to be exact, because of the buildings & walls on the left side), and since you can't actually control your zombies you just have to hope they eventually walk into the last remaining 20~ survivors. Gotta deduct a whole star for this.