If you're new to Touhou, this thread is for you.

What is Touhou?

Touhou is a series of vertical-scrolling shoot 'em up games from Japan. They're all made by a single guy named ZUN. It began all the way back in 1995 and has since given rise to a massive fanbase that produces an extremely large amount of derivative works. If you wish to learn more about Touhou, then head here:

http://en.touhouwiki.net/wiki/Touhou_Wiki

Where can I download the games?

All of the official games can be downloaded here:

https://moriyashrine.org/

or

https://nyaa.pantsu.cat/view/788435

If you have anymore questions, feel free to ask them in this thread.