🏗️ Seat Time — the heavy-equipment simulator in your browser
Seat Time is a free crane and heavy-equipment simulator that runs in any
browser — no install, no download, VR optional. The physics is the point:
the tower crane carries real momentum, the load hangs on a genuine pendulum
with sling angles, centre-of-gravity offset and wind push, and every lift
is scored the way a real practical assessment scores it — load control,
rigging discipline, set-down, collisions.
What's in the sim
- Tower crane with load charts, LMI cutout, sling selection and pre-use inspection
- Excavator, forklift, port gantry, welding, haul truck, lineman stations
- Weekly & daily challenges — one deterministic lift, one worldwide board
- Real-world sites — operate on your street, built from OpenStreetMap
- Scenario editor — build lifts, share them as links
- Career mode, a build-a-building project, upgrades, licenses and medals
Why it exists
The industry needs operators. The path into the seat is expensive, slow
and intimidating. Seat Time gives anyone with a browser the feel of the
craft — and a bridge toward real training and certification.
Sharing
Every lift can be shared: challenge a friend to beat your score, or send
a replay of your actual run — they watch it, then fly the same lift.
Free forever · works on desktop, mobile and VR headsets ·
built with Three.js, zero assets, runs offline-first.