It appears he died by COVID-19: https://dailyvoice.com/new-jersey/mercer/obituaries/covid-19-kills-renowned-princeton-mathematician-game-of-life-inventor-john-

It appears he died by COVID-19: https://dailyvoice.com/new-jersey/mercer/obituaries/covid-19-kills-renowned-princeton-mathematician-game-of-life-inventor-john-conway-in-3-days/786461/ https://dailyvoice.com/new-jersey/mercer/obituaries/covid-19... I went through some of his work in detail while in college. While a mathematician, he clearly had the complexity-compression ability of a top-tier theoretical physicist. A great loss indeed.