Made and published my first game with Unity!Test it out and roast it, guys!
It seems you can make your own towers. That's an interesting mechanic and adds a lot of variation for gameplay.
But I just don't see myself play this without background story. Thats just the same level over and over.
Also I don't understand whats happening on the screen. You need to rethink feedback you give to player of whats every unit and tower do at the exact moment. Also enemies and turrets look the same, you need to make clear difference between one and other.