Thanks to @efornara (for creating FRT - A Godot "platform" targeting single board computers) you can now play 2D games made with the Godot Engine on the Raspberry Pi (and other single-board computers) ...
To use the Infinity Engine Mod Installer, you need to run it from the command line. Here's the basic structure of the command: mod_installer(.exe): This is the name of the program you're running.