The city is an
underground gallery.

Your afternoon, on the rails.

1. Collect each postcard on your ticket, then return to T-Centralen before the time allowance runs out.
2. At a platform, choose a line color. Each departure card shows a route number and its final destination. Branches matter!
3. Choose a stop from the card's menu, then Ride there. Time advances instantly through the wait and ride. Disembarking takes 40 seconds; a new postcard takes another minute.
4. The map marks your position with a halo, uncollected postcards with amber diamonds, and home with a house. Tap any station to inspect it. Route advice prepares a useful train and stop for you.

No real-time waiting. Unlimited undo and restart. Keyboard: H prepares the next advised ride, then Enter rides it; U undoes; R restarts. Tab reaches every control.

Compact adaptation of Under Stockholm's original route, clock and timetable code. These are the project's simulated services on a fixed winter afternoon, not live transit advice. New game rules, interface and illustrative station art.