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How to build a roller coaster online

In CoasterLab you build a real roller coaster piece by piece in your browser — then you ride it. Here's how a good first coaster comes together. No download, no account needed to try.

1. Start at the station

Every coaster in CoasterLab begins at its station — your first piece is already on the ground. Everything you build grows out from there, and every ride ends back home.

2. Build a lift hill

Climb pieces pull the train to the top. The higher your lift, the more speed you have to spend on everything after it. A small lift means a gentle ride; a tall one means yelling.

3. Spend the speed on drops and turns

Drops turn height into speed, and curves and banks spend it. If the train slows to a crawl, your hill wasn't tall enough — add more climb before the next drop.

4. Add the thrill pieces

Loops, corkscrews and launch pieces unlock the more you ride. Put a loop right after a big drop so the train arrives fast enough to make it all the way around.

5. Come home level and straight

The track has to return to the station flat and lined up, or the train can't dock. Save one gentle stretch at the end to slow down and aim for home.

6. Press Ride

That's the whole point. Climb into the front seat, hear the announcer count you down, and ride exactly what you built — then go back and make it wilder.

Tips from the park

  • Speed in, speed out. Every loop and hill costs speed. Earn it back with a drop first.
  • Stuck? Start from a ready-made coaster. CoasterLab includes starter builds you can ride immediately, then change piece by piece.
  • Ride modes are the reward. Sit in the front seat, hang below the track on the inverted coaster, or walk around your park and watch the train go.
  • Mistakes are free. Undo takes back the last piece, and clearing the track can always be undone too.

Build it. Ride it.

Free to try. $1/month for unlimited builds. No ads, no chat.

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