Realm Rush (Unity)

Udemy Course

(Tower Defense Prototype)
Click anywhere between the two castles to place turrets.
Turrets cost 75 gold to place.
If you kill an enemy, it adds 25 gold to your bank.  If an enemy makes it to the end of the level, 25 gold is taken from your bank.
Each time you kill an enemy, another one will spawn that requires 5 more shots to kill.
The goal is to last as long as possible before running out of gold.