Underground Planet by Cindy Tomamichel

SPSFC 2023

Renegade female mercenaries and hired killers. A treasure hidden for a thousand years. But old secrets never die – and some treasures should remain hidden. Inside a planet wide labyrinth of mining tunnels, metal processing, acid waste levels, and abandoned cities is a thriving, genetically engineered ecosystem of predators, prey, and mutant humans. Constantly evolving and always hungry. It's a race against time as the teams fight to survive the planet and each other. There are no prizes for coming second. Get there first - or die.