Tranquility

Suit up. Cycle the airlock. Get off the rock.

Featured in: Free 3D Games That Run in a Browser (No Download), Free PS1-Style Browser Games (PSX Aesthetic, Vertex Snap, Low-Poly Horror)

A PS1-era first-person escape set in an abandoned domed moon base. The crew is gone and the lander is waiting on the surface — but the airlock won't cycle until you're in a full EVA suit, and the four suit parts are locked away. Read the crew's notes, work a keypad from the quarters roster, reset a tripped breaker bank in the right order, dial the boots maglock to cabin pressure, then arm the O₂ pack from the master code. Cross the regolith in low gravity on a ticking oxygen tank, reach the lander, and board it to escape. Free to play in your browser on desktop, no download.

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Controls

• WASD or arrow keys — Move
• Mouse — Look (click canvas to lock pointer)
• E — Interact
• Shift — Run · Space — Jump (low-G, outside)
• ☰ button — Pause / menu
• Best played on desktop with mouse + keyboard.

How to Play Tranquility

Open the mission terminal in the dome to see which of the four suit parts you still need.

Each suit locker is a separate puzzle: the helmet keypad wants the crew quarters in wake order, the gloves bank wants its breakers thrown in sequence, the boots maglock wants the cabin-pressure dial, and the O₂ pack wants a master code built from the three other lockers’ fragments.

Read every note — each one tells you the code or order for one of the lockers.

With all four parts stowed, the airlock light turns green. Cycle it to step out onto the surface.

Outside you have a limited oxygen tank — it refills near the airlock and near the lander. Cross the regolith to the lander on the south pad and board it to escape.

Tranquility Strategy Guide

1. Solve the three component lockers first; the O₂ master code is assembled from the fragments they print, so it has to come last.
2. On the gloves bank, a wrong breaker resets the whole sequence — confirm the order from the note before you start throwing levers.
3. Low-G jumps carry you far but float you slow; for a timed run, sprint flat across the surface rather than bunny-hopping.
4. If your O₂ gets low mid-crossing, the lander pad refills it just like the airlock — push for the pad instead of turning back.
5. The whole run is timed against the global leaderboard, so once you know the four codes, a clean no-backtrack route is what shaves seconds.

Frequently Asked Questions

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