And no, you don't need to do all the weird stuff like map cubic textures or auto smooth, unsmooth, weld, reweld and all that stuff. This is how you flatshade in literally a second.
1: FlatshadingFlatshading is a pretty simple thing that almost every Blockland model has. It shows the actual geometry of the model, instead of a smoothed down version. Basically, it makes things far more square. Blockland, square, so it's required for most things to look great.
1.1: How To FlatshadeFar more simple than the description, flatshading can be done with a single command; ctrl+shift+w (or use the Unweld menu option.)
So, now that you've flatshaded your model, that concludes this section. Or maybe it didn't work. Here's a couple things you'll want to check if it did not work:
1. Make sure your 3D viewport, the window that lets you rotate around your model with the horrid blue background is set to "Textured" display. You can do this by right-clicking on it, and going to the top of the dropdown menu it creates.
2. Go to the "Groups" tab on the toolbar to the right, and make sure "Auto Smooth" is checked.
Left; ctrl+shift+w/UnweldRight; Auto Smooth