[4] It received critical acclaim from publications such as The Guardian,[5] The Seattle Times[6] and Paste[7] and authors Audrey Niffenegger and Stephenie Meyer.

[8] Summit Entertainment acquired the rights to the novel,[9] and it has been made into the film Warm Bodies, written and directed by Jonathan Levine and starring Nicholas Hoult, Teresa Palmer and John Malkovich.

Marion released a prequel novella, The New Hunger, in 2015, published by Emily Bestler Books in the US and Vintage in the UK.

"[12] Despite critical acclaim and a 4.5 star average review on Amazon, [12] sales of The Burning World were disappointing, with many fans reporting that bookstores were not stocking it at all during its initial release.

[16] He contributed a story, "The Girl on the Table" to Nights of the Living Dead, an anthology based on the original George Romero film.

He has a 2007 solo album, Dead Children (released under the name "Isaac Marion's Moon Colony"), which he considers a companion piece to Warm Bodies.

[20] He was also part of a brief electronic/indie rock duo named The Tallest Building in the World, with guitarist Jared McSharry.