Twice Circled has implemented Steam Workshop support for their aquarium management game, Megaquarium.
The Steam Workshop support is technically still in beta, so players will need to opt-in to try it. It’s also recommended that everyone create backup saves before playing around with any mods since its still an experimental feature. You can read more about the update here.
Megaquarium is available on Windows PC, Mac, and Linux via Steam and GOG for $24.99.