Mary Skelter: Nightmares

Although it's listed as unsupported, i've played through its campaign, getting both a bad ending and a good ending. Whilst i did encounter a few graphical glitches, the game played fine throughout on my Steam deck.

Well, where do I even begin? The game certainly manages to entertain. The characters are adorably designed, and the music is solid — even after many hours of play, it remains enjoyable to listen to. I especially liked the background tracks for the Station Grounds and Waterside areas.

The story has a lot of potential, but unfortunately, the execution falls short. There’s too much unnecessary "little girl chatter," adults who behave in ways that don't come across as particularly intelligent, and it becomes quite obvious early on where the plot is heading.

That said, the gameplay is engaging. In addition to the standard dungeon-crawling mechanics and uncovering parts of the map as you explore, there's an interesting feature where you're hunted by "Nightmares." During these sequences, the minimap disappears, and you're under pressure to put distance between yourself and the pursuing threat. Unfortunately, uncovering the map is fairly straightforward, the paths aren't particularly complex, and the puzzles are easily solved.

The game also crashed regularly. I looked up the issue and found that other players had similar problems. I tried several suggested fixes like updating drivers, but none of them resolved the issue.

In short, the game has quite a few rough edges, but in its own way, it’s still fun. However, in my opinion, it doesn't quite hold up against titles like Undernauts or Labyrinth of Refrain.

An awesome blobber, with great music, setting, plot, characters and gameplay. However, this is a poor port and the game suffers from memory leak issues which will cause your game to crash the longer a session goes on. Thankfully, one of the first characters you get access to has an ability that lets you save anywhere, which is why I still recommend you get it, just make sure to save every hour and then restart the game!

While I do like and Recommend this Game. I will say Buy Mary Skelter 2 instead, MS:2 comes with MS:1 and is kinda a Prequel to MS1 and MS:1 Remake Unlocks after you beat 2. I did not know that at the time of Purchase or by the time I was half way through 1. I have decided not to play 2 for a while and Skip to Finale because of it....
Before I begin one Caveot, this game was Meant for the PS Vita so for PC Players I say Temper You're Expectations. Anyone Playing on Steam Deck like I did you'll be getting the intended Experience.
This is the First Dungeon Crawler I have ever Played So I'm probably easy to Impress.
I found the Story to be interesting enough. I was expecting a waifu game which honsetly this is, but its much more than that. I don't know what to say without spoiling it. Coming from playing the Neptunia Saga this is definitely a more Serious Title. You do need to pay attention and get 3 or 4 items that can be rather easy to get the true ending.
I'm a massive Fan of Turnbase RPGs. I actually found this Game Challenging in that Regard so I like it for that

Ok look I know the steam community forum is full of gooners but I promise it's actually just a pretty decent and unique dungeon crawler

Mary Skelter: Nightmares, developed by Idea Factory and published by Ghostlight LTD on Steam, is a dark and ambitious first-person dungeon crawler that reimagines classic fairy tales through a lens of horror, tragedy, and psychological tension. Rather than presenting familiar stories in a nostalgic or heroic light, the game deliberately subverts them, placing iconic characters into a grim world defined by imprisonment, bloodshed, and despair. From its opening moments, it establishes a heavy atmosphere that sets it apart from more traditional fantasy RPGs, signaling that this is a journey meant to be unsettling as much as it is adventurous.
The narrative is set within a colossal, living structure known as the Jail, a nightmarish entity that has swallowed an entire city and turned it into a twisted labyrinth. Humanity survives only in fragments within its depths, tormented by monstrous beings called Märchen—grotesque distortions of fairy-tale figures that embody cruelty and madness. The story follows Jack, a seemingly ordinary boy, and a group of heroines known as Blood Maidens, each based on classic fairy-tale characters such as Red Riding Hood, Cinderella, Sleeping Beauty, and Snow White. These characters are not mere archetypes; they are shaped by trauma, fear, and the oppressive nature of the Jail, and much of the narrative revolves around uncovering their pasts and the true nature of the world trapping them.
Gameplay centers on traditional first-person, grid-based dungeon exploration, a structure that will feel familiar to fans of classic dungeon RPGs. Players navigate sprawling mazes filled with branching paths, hidden rooms, traps, and environmental hazards, carefully mapping their progress as they descend deeper into the Jail. The dungeon design emphasizes tension and endurance, with limited resources, frequent encounters, and an ever-present sense of danger. Certain areas introduce unique mechanics or obstacles, forcing players to engage thoughtfully with their surroundings rather than simply pushing forward blindly.
Combat is turn-based and party-focused, but it distinguishes itself through the game’s signature Blood system. Each Blood Maiden accumulates blood during battle, which can be used to trigger powerful abilities or enter Massacre Mode, dramatically increasing damage output and turning the tide of difficult encounters. However, this power comes at a cost. If blood levels rise too high, characters risk entering Blood Skelter mode, a berserk state where they lose control and may attack allies or act unpredictably. Managing this balance between power and restraint becomes a core strategic concern, adding a layer of risk management that keeps battles engaging and tense even during routine encounters.
Character progression is robust and offers meaningful customization over the course of the game. Each Blood Maiden fulfills a specific combat role, and players can shape their effectiveness through leveling, equipment choices, and skill development. While the overall class structure is fairly defined, the interaction between characters, skills, and blood mechanics allows for experimentation and tactical planning. Jack himself plays a critical support role, able to restrain allies who lose control and influence combat flow in ways that make his presence mechanically and narratively important.
Visually, Mary Skelter: Nightmares embraces a striking contrast between anime-styled character art and grotesque dungeon environments. The character designs are expressive and memorable, while the Jail’s interiors are oppressive, often organic, and disturbingly imaginative. Walls pulse with unnatural textures, enemy designs feel deliberately uncomfortable, and the overall aesthetic reinforces the idea that this world is hostile and alive. The soundtrack complements this tone with moody, sometimes haunting compositions that heighten tension during exploration and escalate appropriately during combat.
The game’s pacing can be demanding, particularly for players unaccustomed to long dungeon crawlers. Random encounters are frequent, and progression can feel slow at times due to the need for careful exploration, backtracking, and resource management. Story beats are delivered intermittently between lengthy gameplay segments, which may test patience for those who prefer tightly paced narratives. However, for players who enjoy methodical progression and gradual worldbuilding, this structure allows the atmosphere and themes to sink in more deeply.
Despite some repetition inherent to the genre, Mary Skelter: Nightmares maintains interest through its evolving mechanics and narrative reveals. The further players descend into the Jail, the more the story twists expectations, uncovering unsettling truths about the world, its inhabitants, and the nature of the Blood Maidens themselves. These revelations give emotional weight to the long journey and help justify the time investment required to see the experience through.
Ultimately, Mary Skelter: Nightmares is a distinctive and content-rich dungeon RPG that thrives on its dark reinterpretation of fairy tales and its willingness to embrace discomfort. It may not appeal to everyone—particularly those seeking streamlined gameplay or lighter themes—but for fans of first-person dungeon crawlers, grim fantasy, and systems that reward careful planning, it offers a deep and memorable experience. Its blend of strategic combat, oppressive atmosphere, and twisted storytelling ensures it stands out within its genre as a bold and unapologetically dark adventure.
Rating: 8/10

I adore this game! It's the first game I've ever felt really motivated to 100% (almost there, just need to clear underground jail) and the story is really fun. Sure, it's a bit fan service-y, but most games are in this genre tbh.
Just to note! The steam and switch versions are really different in their maps. I spent ages looking through guides for where certain affection events were just for the guides to be for switch instead. LOL!!
But I recommend this game, it's so fun and my first dungeon crawler.
Apparently you're supposed to play MS2 first. I only found out after that MS2 actually comes with this game and is required to play that version for the true ending. So i recommend this series- but don't buy this game. Buy Mary Skelter 2 instead.