His fiction has been published in the likes of Afrosf: Science Fiction by African Writers, and Omenana. His poetry has been published in The Coinage Book One, and his academic work featured in The Thinker. He is also a proud charter member of the African Speculative Fiction Society.
Recently, Mandisi has been experimenting with speculative poetry with a focus on fantastical, science fiction and/or elements of horror. His poem, “Black Hole Fugue” explores the theme of change through the ups and downs of anxiety and depression. While the poem itself is not precisely science-fiction, there is a clear allusion to black holes, and the almost fugue state of depressive episodes. Much like the current science around black holes states, a depressive episode can feel like a time warp, where something is sucking you in (the gravitational pull of a black hole sucks in all matter, including light), and you don’t know what’s on the other side.