Run Game with Launch Options from Command Line

[Two]

I'm developing an app that interacts with Steam, and I want to be able to run source games with specific launch options in a way that works cross-platform.

So far I've been attempting to do this using the Steam browser Protocol however I cannot figure out how to add launch options to the

 steam://run/<id>//<args>/ 

deeplink. It seems to open the game just fine but any options added as arguments are ignored.

I also know I can use the

 steam -applaunch <gameid> <params> 

command on linux or

 steam.exe -applaunch <gameid> <params> 

command on windows, however I have not been able to find a way to do this on macos, and it also requires windows users to specify where their steam exe is installed.

If anyone knows a better way to do this it would be appreciated.

[bradley.dotnet]

For anyone coming across this in the future, use the "launch" command (from the protocol page you linked), ie.

steam://launch/<id>/dialog

At least to get Steam to use the configured launch options or present a choice to the user. Confirmed this uses the default selection if selected in the app properties, where run completely ignores it.

[Christina]

This thread was quite old before the recent post, so we're locking it to prevent confusion.