Full length films you stumble across on youtube...

You should look into the history of Pulgasari if you haven’t already

I know that In the 1960s, every major studio in Japan was churning out giant monster movies and television series like crazy and they were phenomenally popular both domestically and in foreign sales. South Korea's Keukdong Entertainment Company, a producer of many popular Korean films at the time, perked up and took note, thinking, "Why, we should do THAT!" Thus Keukdong assembled a crew, hired out Japanese effects technicians from Toei Studio and created Yongary, Korea's first* giant monster film!

* It may actually have been the second, the first possibly being a 1962 version of Pulgasari, a super-obscure film that was later remade in the 80s in North Korea at the whims of Kim Jong-Il. As I'm not sure how big the original Pulgasari was, I don't know if it qualifies as a giant monster film or not. The 80s version does, however.

North Korea kidnapped the director and forced him to make movies for them

There's a documentary about it, showng the story of the production and the crew escape from North Korea. I think it was called "The Lovers and Despot."

Begotten (1990) - Not for everyone to say the least.

By Apollo Go To PostNorth Korea kidnapped the director and forced him to make movies for them

Yeah, I have always wanted to watch this filmm with the crazy story behind it.

Good to know it is on Youtube.

Angel's Egg (1985) - A gloomy little existential anime. Still beautiful. Still don’t get it, but that’s fine. The last shot reminds me of Solyaris.