It's incredible what wealth of information fits into 52 pages. The nods to other resources, may it be essays or assets, are very much appreciated - this is a great starting point to making your own game, one-page or not, although the focus certainly helps in creating something accomplishable. I loved the approach of using the "Start With This" exercises, they get your gears turning even if you decide to only work on a couple of them. Honestly, what a great guide!
itch.io is an open marketplace for independent game creators. It's completely free to upload your content. Read more about what we're trying to accomplish and the features we provide.