Otys

The sea has swallowed nearly everything, and the last settlements cling to what is left. In Otys (2017) you run a team of divers for the Otys colony, sending them down to recover debris from past civilizations. Each diver sits at a different depth with special abilities, and your job is to match those abilities to the colony's bonuses and use the salvage to fulfill contracts. Oxygen is limited, and once a diver completes a mission they have to head back up. It plays like a puzzly worker placement and set collection game with a distinct underwater clock ticking. One to four players, about an hour, and a solo mode if you want to dive alone.