Billionth Soul

Colony-building deckbuilder

Billionth Soul is a PC idle roguelite deckbuilder about growing humanity’s last colony aboard a failing generation ship. You start with one thawed sleeper and work toward a population of one billion.

Cards and life support

You draft cards and place them in a grid to build combinations. As the colony grows, you trade population against dwindling life support, balancing the push toward a billion souls with the ship’s shrinking resources. The billionth soul is the hardest one to save.