This edited volume identifies and analyses the Eco-Weird as an interdisciplinary theoretical tool for engaging in fictional, philosophical, filmic, and ludic texts. It is the first volume to engage in the study of the Eco-Weird, which is a developing field at the intersection of environmental thought and Weird fiction, broadly construed to include literature, games, films, art, and television shows. The Eco-Weird has intersections with other literary and scholarly fields, including horror studies, game studies, phenomenology, literary criticism, and eco-criticism, but provides a unique set of tools to engage both its texts and the ongoing environmental crises of climate change, environmental justice, pollution, and more.