The case of the missing flappybird tutorials

Question

I got mid-way through the excellent HTML5 Flappy Bird Game Clone tutorials and to my great frustration parts 4 & 5 seem to have dissapeared.

Any leads on where these are hiding? Alternatively, if anyone can suggest any other good primers on developing interactive html5 content in Animate would be much appreciated....

Here are the parts I've managed to find. You'll notice that the links at the bottom to further parts of the tutorial are broken. I tracked these down by searching by title and hacking the URLs and have no luck with these methods for parts 4 & 5.

https://blog.adobe.com/en/publish/2016/06/29/building-a-html5-flappy-bird-game-clone-with-adobe-animate-cc.html

https://blog.adobe.com/en/publish/2016/07/13/building-a-html5-flappy-bird-clone-with-adobe-animate-cc-part-2.html

https://blog.adobe.com/en/publish/2016/08/31/part-3-building-a-html5-flappy-bird-game-clone-with-adobe-animate-cc.html

https://blog.adobe.com/en/publish/2016/09/28/part-6-building-a-html5-flappy-bird-game-clone-with-adobe-animate-cc.html

Any leads would be immensely appreciated!!