Synduality Echo of Ada takes place in 2222, years after a mysterious poisonous rain called The Tears of the New Moon has wiped out most of humanity and birthed deformed creatures that now hunt the population.
Amidst the calamity, humans are forced to build an underground haven, named Amasia, to survive. Take on the role of a Drifter whose goal is to collect the rare resource known as AO Crystals. You must collaborate with your artificial intelligence partner to rise up in a world against other players, xenomorphic creatures and the hazards of the surface.