Japan has produced many, many, games. And naturally, not all see the light of day. Some get lost in the shuffle. But many are just far too weird to be brought to our country. Here are the four most notable ones. If you’re interested in playing any of these games, they are available on emulators or if you have the Japanese version of the systems listed.

5. Segagaga

Released by Sega for the Dreamcast, this game is a weird, self-referential game that references forgotten Sega properties and deals with a fictionalized version of Sony’s PlayStation 2 attempting to defeat our heroes in a way that closely mirrors real life. It’s rare for a game to reference the real world company that created it, and it’s even rarer that the company will take shots at their competitor in-game.

4. Pepsi Man

Pepsi Man was the soda companies Japanese mascot in the ’90s. And for some inexplicable reason, Pepsi Man spawned a video game for the PlayStation 1 in 1999. You play as Pepsi Man, who jumps over obstacles in an effort to restore Pepsi to the world. And boy, is this game hard. It plays much like an endless runner game, similar to Temple Run or Subway Surfers. The game requires stage memorization and is incredibly difficult. But it is still fun and some points and has a very memorable soundtrack.

3. Devil World

A Pac Man style game released for the NES, this oddity was created by Shigeru Miyamoto, the creator of Mario and Zelda. This remains his only game not released in America. Why? Well, the game involves being chased by demons among a maze of crosses overseen by Satan. Japan isn’t sensitive to religious stuff, but America is far more precarious about religious content in media, so of course, we never received it.

2. Sweet Home

Another creepy NES game. It’s an unsettling haunted house game that pushes the NES hardware to its limits, with some pretty terrifying monster designs, including a mass of writhing worms. Creepy stuff. This game is actually pretty important to video game history, in fact. It directly inspired the hugely popular and influential Resident Evil franchise, which has become one of the most popular game series of all time.

1. LSD Dream Emulator

Quite possibly the weirdest video game I’ve ever seen. Released for the PlayStation 1, (in Japan only, of course) this trippy game was based on the dream diary of one of the game’s developers, and boy does it show. This game is a nightmare, and I mean that literally. Things make no sense, and many levels are completely randomized. There is also no way to win, so I guess that means its more of a simulation than an actual, objective based game. This is a game I really REALLY want to play, but sadly my 2007 computer cant run emulators and I don’t have a Japanese PlayStation. Oh well…