You can download nwjs from https://nwjs.io/ (pick the normal download suiting your architecture), extract files, and copy/paste them in the game folder (merge existing directories and overwrite files).
Then execute the nw file and you should be good. Usually double clicking on it is enough. Alternatively in a terminal:
./nw
Some distros also have nw binaries you can install system-wide with a package manager (for instance nwjs-bin in Arch's AUR repositories). But I am a bit less proficient with this method, so you may want to use a search engine for some tips.
Welcome to linux, hope it will suit you.