Something is stirring below...and it's on you to keep it down.

Underground! adds a new threat to the game: the infamous JA2 Crepitus creatures, including 3 new enemy types (adolescent, male and female Crepitus) and the terrifying Crepitus Queen as a Dictator with new event cards and mechanics. Take them up in new scenarios or incorporate them in you base campaign.

Descend into new sectors, such as mineshafts and secret research facilities, that host new dangers and top secret tech-inventions like the Rocket Rifle and lasers.

New rules for lighting can be integrated into the base game, bringing darkness and night-vision equipment to Arulco!