Do I need an internet connection to use Celeste on Steam?

I just finished downloading Celeste and wanted to ask if I could play this game on my laptop while driving a car if I don't have an internet connection. Thanks in advance.

Pull out the LAN cable and try it out.

Steam games almost always have to connect to the launcher, which is not possible without a network.

Yes, when starting a game you can select "offline mode". This works out

I don't think an internet connection is necessary.

You have the game, try it out.

If it doesn't have online functions like multiplayer then it should work without it.

That's why I said play STEAM.

Yes. I'm also talking about Steam