A large group of units, generally with ranged attacks, where the most effective positioning is clumping them up into a ball. They hit a certain tipping point wh

A large group of units, generally with ranged attacks, where the most effective positioning is clumping them up into a ball. They hit a certain tipping point where fewer and fewer things work to counter them. If both sides have a death ball, then the smaller one loses by a bigger margin the larger the death balls get. In a made up but typical RTS, one swordsman beats an archer, ten archers are an even match for ten swordsmen, and fifty archers beat infinity swordsmen. In a 10v8 archer battle, the bigger side survives with about 3 archers, but in a 100v80 archer battle, the bigger side survives with over 50. This game has archer death balls.