Stop-motion Tetris Chalk Animation

One of my favorite channels on Youtube, called AWE me (Amaze, Wow and Educate), is home to a collection of videos based around creating various kinds of art, props and actual forged weaponry. While the channel's most popular video series revolves around the channel's owner's blacksmithing business, there are some pretty cool videos involving chalk art. This video in particular, which depicts a stop-motion simulation of the game Tetris on a large chalkboard surface, is really impressive.

At the end of the video, you can see how the chalkboard surface actually curves onto the floor from the wall, which makes it look like the Tetris screen is actually standing straight up on a surface instead of just being plastered onto a wall. I assume that similar techniques with the angles of surface onto which images are displayed can be used on green screens to project more realistic simulations, rather than just having them be flat.