[3] Born in New York City but raised in Arlington, Virginia, Rosenbaum received degrees in computer science and religious studies from Brown University.
The Ant King and Other Stories, a collection of Rosenbaum's short fiction, was published by Small Beer Press.
[4] The English version, edited by Liz Gorinsky, was released June 8, 2021 by Erewhon Books as The Unraveling.
[7] His 2018 Jewish historical fantasy game[8] Dream Apart, inspired by and eventually published alongside Avery Alder's Dream Askew, co-created the Belonging Outside Belonging system, inspiring games such as Wanderhome[9] and Balikbayan.
[10] Rosenbaum formerly lived in Washington, DC, with his wife Esther and children Aviva and Noah.