Doing the same thing also works in low ranked Multiplayer, but once you start ranking up. It just gets outscaled. The Gold tower is just absolutely insane. You basically make a full saturation maze of Scaffolding on Day 1. Put one of each tower (except Chaos) in the middle of it. Then level up the gold tower and it will give you like 1k gold per day and you just snowball and get a single Fire Mage to stack all your +Power on and it just oneshots the whole battlefield at 0s.