[commandlinefan]

Still, not really in the sense of the article - he's talking about desktop apps like word processors or email clients: Minecraft's GUI is just a big canvas that the 3D renderer renders into. It's not using any windowing components - IIRC, even the menu and buttons were custom.

[bombcar]

Minecraft can pop up GUI windows but even mods rarely do it.

Running a server without nogui gets a window also.