Invasion of the Abyss

Fighting the abyss

Invasion of the Abyss is a PC game with two independent ways to face the abyss. In one, you choose a hero, build skills and gear, then fight through enemy waves as you push deeper.

Defending a sanctuary

The other way is to fortify a sanctuary against assaults that alternate between day and night. Disasters and strange rules complicate the defense, while bosses and branching endings shape what happens as you hold out.