[PC, Epic] Free - The Callisto Protocol @ Epic Games

Next Christmas Freebie from Epic games.
Available free from the Epic store from 5am 25th December for 24 hours only

The Callisto Protocol

Survive to escape the horrors of Callisto. Using a unique blend of shooting and close-quarters combat, players will need to combat rapidly evolving creatures while scavenging to unlock new weapons and gear to outrun the growing threat of Jupiter's Dead Moon.