Board Thread:Suggestions forum/@comment-26538177-20150627185326/@comment-26119768-20150630214826

Catapults aren't lame. They are an exemplary example of torque or gravity being harnessed, violent the use may be. Also, "catapult" is a generic term for everything you listed and more, so that includes the ballista, the mangonel, the onager, the couillard, and other models. Sorry, I'll get off my soapbox now.