Sorry for the delay. I just tried these commands, and you might want to edit your post for future reference as there are typos in the first line : there are no "-" needed between apt update and apt upgrade.
The previous error messages about packaging are gone. Now, I receive the following input just FYI :
~/Téléchargements/Hardware Tycoon (Linux 64-bit)$ ./nw
LaunchProcess: failed to execvp:
/home/adam/Téléchargements/Hardware Tycoon (Linux 64-bit)/nacl_helper
[29642:29642:0826/120211.111283:ERROR:nacl_fork_delegate_linux.cc(314)] Bad NaCl helper startup ack (0 bytes)
[29640:29648:0826/120211.246568:ERROR:nacl_browser.cc(305)] Failed to open NaCl IRT file "/home/adam/Téléchargements/Hardware Tycoon (Linux 64-bit)/nacl_irt_x86_64.nexe": -4
[29640:29660:0826/120211.366005:ERROR:top_sites_backend.cc(92)] Failed to initialize database.
[29682:29682:0826/120211.661482:ERROR:audio_context.cc(134)] no user gesture
And the game still works. Including sound, despite these new "error messages". I mean, at this point, it's no big deal for me, the game works and I'm all happy! :-)