It's an interesting idea badly implemented. Far too many problems to elaborate on.
First things I'd change:
Progress meter for waves.
A better way of identifying between resource meters and units.
The ability to remove and sort slots.
Build most powerful forces, unleash hordes of monster and attack enemy defensive units!
Use mouse to play this game. Instructions are in-game.
It's an interesting idea badly implemented. Far too many problems to elaborate on.
First things I'd change:
Progress meter for waves.
A better way of identifying between resource meters and units.
The ability to remove and sort slots.