The inventory system would be used for special weapons, armours, maybe potions and bonus items. Items would be gained in many different ways: defeating monsters, gaining achievements, or maybe even just finding stuff on the ground. Maybe when barracks units become defeated, they could have a chance of dropping their weapon, which would be able to give bonuses to other towers.
- Chipped tooth from wulf, worg and winter wolf
Broken staff from shaman and necromancer
Orcish shortsword from goblin and orc
Healing staff from shaman
Battered club from ogre
Staff of bone control from necromancer
A few ideas, I may add more later.
Please add some of your ideas