Sub Terra is a horror survival collaborative game for one to six players. With up to five friends, you are part of a group of cave explorers, speleologists who, following an incident, find themselves trapped in the underground depths. Together you must find the exit before your lamps run out and you are forever lost in the darkness ...

You will need to work as a team to quickly undertake cave exploration and avoid a series of deadly dangers. Split up to cover more ground or stay together to take less risk. One misstep can knock you unconscious and your companions will have to organize themselves to rescue you. Light and hope are not inexhaustible and worst of all, you fear that you are not alone underground ...

Some elements of the game are phosphorescent.