Survival Mode!

Description:
Biters only attack at night, regardless of pollution levels, and come in waves. Survive for as many rounds as you can!

Features

Each Round has more biters spawn
They have a chance to drop ammo so be sure to pick it up. Ammo becomes more important later on ...

Thank you! That fixed it.

I'm trying to have a stack of bullets spawn on the ground whenever the player kills an enemy unit.

Here's an example code:
game.surfaces['nauvis'].create_entity{name="item-on-ground",position={0,0},stack={name="basic-bullet-magazine", count=1}}

This doesn't work. Gives the error that the item ...