Was able to add it to my account through the Steam desktop app.
Dungeon of the ENDLESS
A few hundred condemned criminals were being shipped to the Auriga system on board the prison hulk “Success”. While this was presented as a chance to earn back their place in society by working hard for the common good, they understood that in fact they would be slave labour, sent to colonize an unexplored planet. All they knew about Auriga Prime was what the probes told them: it had water, temperate zones, plant life, and plenty of metals in the crust.
Release date: October 2014
Review: very positive
Credit: r/GameDeals