RPGmaker doesn't have Linux support appearantly (dunno why), you can use Wine though. With Winetricks, it may work. It does sound like something that can break your system though...
To be clear, RPGMaker does theoretically have Linux support, but a lot of plugins and custom solutions don't play nice. And since I'm doing a little custom file IO for the special save feature, it's very unlikely to fully work as-is. As I've said though, people are welcome to experiment, I just make no guarantees (except that it WILL fail to work correctly on Linux out of the box).
Got this to work in Linux btw. Here's the little hack:
* Download and extract the Linux version of NW.js. I used nwjs-v0.80.0-linux-x64
* Copy the ./www dir and ./package.json file to the nwjs folder
* Fill in the name field for package.json ("name": "" -> "name": "anything")
* Rename www/img/system/Logo.png to logo.png
(windows is case-insensitive)
* Run ./nw
I was able to play through a few endings and saving works just fine. Enjoyed this game quite well, nice work.