Renaming the binary to native_client or linux_64_client before packaging would make the installation process on Linux simpler. Alternatively, mention in the Linux installation instructions that the user has to rename the file to make it work with the default launch script.
Currently, https://wc-ng.mooo.com/sauerbraten_2020/2021-02-02/wc-ng-v1.0.250-sr6488_linux_x86_64.tar.bz2 for example contains a binary called "sauer_client", but the sauerbraten_unix script will not find that binary when it's placed in bin_unix as-is.
Renaming the binary to native_client or linux_64_client before packaging would make the installation process on Linux simpler. Alternatively, mention in the Linux installation instructions that the user has to rename the file to make it work with the default launch script.