No “top doujin” list is complete without Touhou . With over 20 main bullet-hell shooters and countless spin-offs, it defines the genre. Massive fandom, incredible music, and fighting game crossovers.
If you're referring to popular or top-rated doujinshi or self-published works, Japan has a vibrant culture of doujinshi that includes a wide range of genres, from manga and novels to games and other media. These works are often showcased at events like Comiket, one of the largest doujinshi markets in Japan.