The Alien Worlds Collection

 was the fourth in a series of Target novelisation audiobook collections. As the title suggested, all novelisations were set on planets other than Earth.

Publisher's summary
Five classic novelisations of TV adventures on alien planets!

In Doctor Who and the Zarbi, the First Doctor and his companions Ian, Barbara and Vicki are trapped on the remote planet Vortis. In Doctor Who and the Curse of Peladon, the Third Doctor and Jo are mistaken for delegates of the Galactic Federation on a primitive and superstitious world. In Doctor Who and the Brain of Morbius, the Fourth Doctor and Sarah find the living remains of a renegade Time Lord and his maniacal saviour. In Doctor Who and the Leisure Hive, the Fourth Doctor and Romana find subterfuge and corruption lurking beneath the surface of the pleasure planet Argolis. In Doctor Who: The Greatest Show in the Galaxy, the Seventh Doctor and Ace fight for their lives on Segonax, home of the Psychic Circus.

Read by William Russell, David Troughton, Tom Baker, Lalla Ward and Sophie Aldred.