This chapter outlines the emergence of climate fiction and its key modes. It pays particular attention to the extent to which climate fiction has worked within the established conventions of literary realism, meeting the many representational challenges mounted by climate change. While it considers the extent to which realism is able to render the abstract and intangible phenomenon of climate change visible, it argues that there is also a significant body of writing on the subject which turns to alternative forms and narrative strategies in the effort to represent climate change, and manages to overcome some of the limitations of realism. In other words, where climate fiction meets the challenges of representing climate change, it has the potential to provide a space in which to address the Anthropocene’s emotional, ethical, and practical concerns.