itch.io

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.

I understand. Thanks for taking time to explain it.

It's probably easier to keep things the way there are, and if someone runs into some kind of issue, they may find this thread with the workaround.

Symptom

$ ./Game
[124162:124162:0528/204003.031210:ERROR:component_loader.cc(183)] Failed to parse extension manifest.
[124187:124187:0528/204003.075234:ERROR:viz_main_impl.cc(150)] Exiting GPU process due to errors during initialization
[124261:124261:0528/204003.260138:ERROR:gles2_cmd_decoder.cc(3614)] ContextResult::kFatalFailure: fail_if_major_perf_caveat + swiftshader
[124261:124261:0528/204003.261071:ERROR:gles2_cmd_decoder.cc(3614)] ContextResult::kFatalFailure: fail_if_major_perf_caveat + swiftshader

1. Download latest nwjs normal build for Linux (it is very likely that the target architecture will be 64 bit): https://nwjs.io/downloads/
2. Extract in game folder, overriding any existing file
3. Run game

To the community

Please note that this was successful on an up-to-date Arch Linux with game version 0.31a.0.

Your mileage may vary.

To the dev

You may want to evaluate whether to bump project dependencies (or not depending on the supported platforms). Or maybe open a troubleshooting section on the wiki?
Thanks for the game, and thanks for distributing a linux build, much appreciated.