I’ve always had trouble really getting into many modern horror games and films. Many of them trade in legitimate terror for jump scares and gratuitous gore, neither of which appeal to me. A general sense of anxiety melts away when you’ve predicted the jump scares or seen one too many mutilated bodies, after all. I’ve always gravitated towards more psychological horrors, but of course, they terrify me to the point that I rarely play them. That being said, one of the most terrifying games I’ve played is a free RPGMaker title that released over a decade ago.

Yume Nikki originally released to relative obscurity in 2004. However, the game was eventually translated into English and a popular Internet community got a hold of the title, bringing attention to the title first on Western shores, then in Japan itself. Even then, though, the game maintained a relative niche status, although its re-release on Steam earlier this year promises to get the more eyes on the title.

Don’t let the game engine that helped to create Yume Nikki fool you though–this is no RPG. In Yume Nikki, you explore the dream world of Madotsuki, a shut-in that doesn’t leave her apartment. The player never once leaves the girl’s apartment, as Madotsuki refuses to leave. There’s not much to do in the room–the only things worthwhile to do are save the game and sleep, a telling sign of the character’s mental state.

Once Madotsuki goes to sleep, you can freely leave the room, and explore the girl’s dreamscape. The goal of the game is to visit the various worlds of Madotsuki’s dreams and collect various objects, eventually leading to the game’s conclusion in the waking world. However, Madotsuki’s dreams aren’t happy or bright–they’re downright nightmares.

At first glance, Yume Nikki’s art style is very similar to Earthbound. It’s unusual and trippy, but still has a basis in reality. While Earthbound mostly stays on the lighthearted side of things, Yume Nikki is dark and unsettling. You’ll guide Madotsuki through twelve different, yet interlinked worlds, each with their own visual hooks. It’s never explained if these worlds are somehow related to the character’s psyche or just a terrifying jumble of nonsensical imagery; much like our own dreams, that is up to the dreamer (and in this case, the player) to decide.

But what makes Yume Nikki’s dream worlds so frightening are how lonely and oppressive they feel. While there are occasional NPCs to interact with, they aren’t exactly Madotsuki’s friends, and some are out to harm her. For the most part, though, you spend the time in Yume Nikki navigating paths, halls, and landscapes alone, with no one to accompany you besides the game’s haunting soundtrack.

It’s this intense, oppressive loneliness that really made Yume Nikki stick in my mind, more than a decade after playing it. The feeling that there’s no one to get you out of your own head, the life that Madotsuki lives every day, is one that hits too close to home for many people. There are many interpretations to Yume Nikki’s events, thanks to how vague the storytelling is, but I take it as a girl who wants to escape the troubles of the real world of her dreams but cannot even do that as nightmares plague her.

This is all made obvious with the “danger” Madotsuki is in. Some of the creatures within this dream world will attempt to harm her, but the consequences aren’t as expected. In most cases, Madotsuki will simply be transported back to the hub that lets you pick which world to explore, making you walk through the world again. In a few scenarios, the monster will force Madotsuki to wake up completely.

None of these consequences are particularly disastrous from a gameplay standpoint; the dream worlds aren’t particularly large nor is it difficult to just go back to sleep. But it’s very indicative of Madotski’s mental state that waking up is the worst thing that can happen to her.

What’s so terrifying is how close to home some of the game’s vague themes can feel. Feeling alone, wanting to do nothing but just sleep, even though sleep itself is no respite from the difficult real world… these are things felt by many people with mental health issues, and is relatable in a way many horror games are not.

Yume Nikki is an incredibly terrifying game. It’s been over a decade since I played the free, niche title, and it left a lasting impression on me. The game is available on Steam and can be run on a toaster, and I highly recommend any horror fan give it a try. The dream world of Madotski may terrify you in ways you wouldn’t expect.