Inform is a free and open source interactive fiction editor for Linux, MacOS, Android and Windows. Using Inform, you can create very powerful works of interactive fiction. It comes with a build-in own programming language based on English language text. You can use this tool in your literary writing, games industry as a prototyping tool and also in your education. It comes with spell checker and extension support and more.
Install Inform on Ubuntu Linux
Inform is available as a flatpak package file form flathub. You need to install flatpak and flathub on your system first to install inform. Restart your system after it. Now open the terminal app (ctrl+alt+t) and run below Inform flatpak installation command.
flatpak install flathub com.inform7.IDE
It will install the latest version of Inform on your system. Now you can open it via the applications menu or via the below command.
flatpak run com.inform7.IDE
You can also uninstall Inform via
sudo flatpak uninstall com.inform7.IDE