Yeah, the game isn't very well optimized. But with more zombies, you are able to get more bodies to put in the pile, making it faster to beat the game.
Lol, I can't play it because the game is starting to get too laggy to play it.And losing means a ton of zombies have more ways to get to you. But I'm going to play again to finish the game, but can you buff the spikeweeb to stay permanet but cost more, like 200 sun?