Hi! Your steam ID in the same root folder as your .app, and if you're using nw 10.5, you should add the "in process gpu" tag in your package to be sure the overlay is correctly displayed
(more details in this very topic)
Thanks, i guess ill have to dig more since i don't find the problem yet, of course i added the tags, for example linux:
"chromium-args": "--disable-extensions --disable-plugins --disable-internal-flash --disable-popup-blocking --enable-gamepad --enable-html5-camera --allow-file-access-from-files --disable-software-rasterizer --file-descriptor-limit<10000> --in-process-GPU"
Ubuntu 12.04 (64) libsteam_api.so is in the package.nw , steam_api.txt is in the root. Game works, but no overlay, same with Mac.
I even went to use the 1.30 Steam SDK to be sure of compatbility since greenworks 0.3 was made to work with that.