Board Thread:Off-Topic/@comment-7395353-20130620201832/@comment-5792287-20131104111235

Dani3204 wrote: Milesprower2 wrote: New bug I found! If you sell a Monkey Ace while the Mouse is over the runway, and you click to bring up the upgrades menu for the sold tower, getting any upgrade will make the Ace reappear but the runway won't! This lets you have infinite Monkey Aces! That's kinda what Cupa just said above.... If by Cupa you mean Creeper, it's not the same thing.

When you get the "invisible tower" it can't do anything. These Monkey Aces without runways are fully-functional. It's what happens if you do the invisible tower glitch to a Monkey Ace and get an upgrade.