Undersea Post Office Sim
Launches 12 November 2026 · PC
Undersea Post Office is a cozy desk game about running the post office at the bottom of the sea. Divers swim up to your porthole with parcels. Check where each one is going, pay the postage in stamps, turn away the fakes and pack everything into the cargo fish before the shift ends. Then count the money, because rent is coming. Every shift starts with The Waterline Herald. The front page tells you what is different today: a storm that doubles the risk, a route fee that went up, a stamp shipment that came in short, forgers copying the names of real towns. Read it before you open the window. Each day the office runs one route: Teal, Azure, Violet or Rose. When a diver hands you a parcel, find its town on the route map. If the town is not on today's route, send the parcel back. If the town is not on the map at all, someone is trying to smuggle it through. Put the parcel on the scale to see its weight band, then look up the route price in the handbook. Postage is paid in stamps, and each colour has its own value, from the green $2 to the blue $40. They have to add up exactly. Paying too little or too much costs you $25. Accepted parcels go into the hold, and the hold is a...
Gameplay
Undersea Post Office is a cozy desk game about running the post office at the bottom of the sea. Divers swim up to your porthole with parcels. Check where each one is going, pay the postage in stamps, turn away the fakes and pack everything into the cargo fish before the shift ends. Then count the money, because rent is coming. Every shift starts with The Waterline Herald. The front page tells you what is different today: a storm that doubles the risk, a route fee that went up, a stamp shipment that came in short, forgers copying the names of real towns. Read it before you open the window. Each day the office runs one route: Teal, Azure, Violet or Rose. When a diver hands you a parcel, find its town on the route map. If the town is not on today's route, send the parcel back. If the town is not on the map at all, someone is trying to smuggle it through. Put the parcel on the scale to see its weight band, then look up the route price in the handbook. Postage is paid in stamps, and each colour has its own value, from the green $2 to the blue $40. They have to add up exactly. Paying too little or too much costs you $25. Accepted parcels go into the hold, and the hold is a fish. The parcels come in odd shapes, and each day brings a fish with a different body to fill. From day 3 the fish hangs from a beam, so spread the weight and keep it level for a bonus. At the end of...
Features
- Single-player
- Family Sharing
Release details
Undersea Post Office Sim is developed by NurRam. Undersea Post Office Sim launches on Thursday, 12 November 2026 on PC. This date comes from Steam and was last checked on 6 November 2026.
Frequently asked questions
When does Undersea Post Office Sim release?
Undersea Post Office Sim launches on 12 November 2026.
Which platforms is Undersea Post Office Sim on?
Undersea Post Office Sim is on PC.
Who makes Undersea Post Office Sim?
Undersea Post Office Sim is developed by NurRam.