So after going over the game and what it offers, I was thinking of having the game unlock an infinite mode along with options to adjust your level between 1 and the max you've completed. Infinate mode would be in an arena outside of the main game that's more like a "training ground" type setting. The swarms get bigger and the enemies get stronger/faster the more you proceed. Of course there's a cap to all of this since iOS can handle only so much on screen.
Unlock-ables...
Posted by CGBYLG on