In the project. Slides Controls: To go to the next slide, simply click, hit space, or hit the right arrow. To go to the previous slide, hit the left arrow.
My own challenge, yay! To get hacked blocks or retro/old/gone blocks, find a 3.0 hacked blocks project and add them to your backpack. I made a such project. If you want, you can use it: https://scratch.mit.edu/projects/411270709/ Music is "Into the Unknown" by Over The Garden Wall