He also wrote and directed episodes of the prequel TV series Mystery Road: Origin (2022), and in 2024 is co-creator and director of Thou Shalt Not Steal.

[11] In 2019, River co-created (with Tanith Glynn-Maloney), co-wrote (with Kodie Bedford), and directed Robbie Hood, a six-part series of 10-minute episodes,[12] which was widely praised.

[22][23] Over some of the 10 years leading up to its release in June 2023, River worked with his mother, Penelope McDonald, as co-writer and cinematographer on the feature-length documentary film Audrey Napanangka, about a Warlpiri woman and her partner, Santos, who have raised many children in the Central Desert.

The film's locations included Mparntwe (Alice Springs), Yuendumu, and Mount Theo (Purturlu), Audrey's country, and it was co-produced by Trisha Morton-Thomas and Rachel Clements.

Shot in South Australia and the Northern Territory, the road trip comedy drama series stars Noah Taylor, Miranda Otto, Will McDonald, and Sherry-Lee Watson.