Imagine the opposite of Tower Defense! Instead of placing the towers, you send the waves!
To send a wave you need money. You get this money from sending waves!
When the units travel through the level they generate money. The more life they have left, the more money they produce.
But the AI controlling the tower placement knows this. It places towers where you least want them!
Luckily you are equipped with several special abilities. You can regenerate, refelect and dodge.
The game was made in the Godot game engine, and the source code is available on GitHub.