Depends what you mean “3D”. It is still ASCII sprites, but is considered 3D by way of multiple z-levels (each only visible one at a time). Except last year a n

Depends what you mean “3D”. It is still ASCII sprites, but is considered 3D by way of multiple z-levels (each only visible one at a time). Except last year a new UI was released for the Steam debut, which also features new graphics akin to the fan made tilesets. Those tile sets add a lot of visual interest and increase the 3D feel (even allowing you to see down to levels below your current level). And, for many years now, there have been visualizer plugins like Stonesense that could render your fort in isometric view.