Meleager (1916) by Herbert M Vaughan

The Strange Invaders (1934) by Alun Llewellyn

Congratulate the Devil (1939) by Howell Davies

Dangerous Waters (1952) by Islwyn Williams

Y Blaned Dirion (The Gentle Planet) (1968) by Islwyn Ffowc Elis

Survivors (1975) by Terry Nation

The Space Eater (1982) by David Langford

Aztec Century (1983) by Christopher Evans

Chasm City (2001) by Alastair Reynolds

Jigsaw Men (2004) by Gary Greenwood