The annual tradition continues, Edelweiss presents:
Dojin Game Trailers of Comic Market 92 (2017):
https://www.youtube.com/watch?v=u1-HvQcBeJM
Disclaimer: there might be NSFW bits, viewer discretion is advised.
Background details on Comic Market / Comiket:
https://en.wikipedia.org/wiki/Comiket
http://www.comiket.co.jp/
There are links to each game and its circle here (right frame): http://edelweiss.skr.jp/info/c92pv/index.html