Many weapon systems sent to Ukraine or deployed by Russia have been characterised by at least some commentators as potential "game changers." From Javelin to Lancet and the Leopard 2, many new systems have been introduced and/or scaled up in use over the course of the war, and some have entered in dramatic fashion (as with the recent ATACMS strikes). In this episode I review a sample of "game changer" systems, discuss how we might evaluate whether or not a system deserves the title, and figure out what each did, or didn't, do to change the war in Ukraine.