Use the arrow keys or space to navigate the slides. Use fullscreen if possible. The tutorial works. If your project doesn't, it means you failed to follow it. Go through again and read closer.
This is the second part in the series. Part three is at: https://scratch.mit.edu/projects/738144933/ You can see the rest of the parts at: https://scratch.mit.edu/studios/32152322 The music is the Training Menu theme from the game Wii Fit Plus. The soundtrack was created by Toru Minegishi, Manaka Kataoka, and Shiho Fujii. I thank @TiberiumFusion, @MathMathMath, @Scratch-Minion, and @Vadik1 for helping me learn how 3D graphics engines work.