Zombie Mode

It would feature one team on one side of Summoner's Rift. The other side would be infested with zombies. The zombies would be minions and every wave they would get increasingly stronger. The minions would be very easy to kill at first but as the waves increase the minions would health and armor would increase. The minions could kill the champions if the champions were being careless and the minions are very strong. It would take around 2/3 hits to take a champion down. The minions would all be melee and you can build health by buying things. The minions would try to take your turrets, then your nexus. The Inhibitor would be an increase in the Zombie's strength so that should be protected. The turrets you would stand by gives you extra AP and AD to help you fend off the Zombies. The zombies would increase in numbers as well.

The user-controlled team would have 1375 gold to start and they get gold every minion kill they get. So if you kill more minions you get more gold. The user-controlled team would have a buff that would help them defeat the zombies. The AD would have increased attack speed while the AP champions would have 75% Cooldown on their abilities. The user-controlled team can buy normal game items like Infinity Edge or Rabadon's Deathcap. This game mode is really based off of Call of Duty's Zombie mode.

I think it would be a cool idea.