It's simple, but I can see the potential. Might try it again once I have a friend of mine so I can properly experience the co-op. Adding some additional modes or modifications settings to the game could help spice up the chaos a bit. For example, making it so the players spawn randomly, making it so the hunter gets damaged by the orbs, or adding in obstacles/mazes the players have to zip through. Either way, I see a lot of potential and am excited to see if you decide to develop it further.