Novena Diabolos

About

Novena Diabolos is a single player survival role playing game with horror, mystery, thriller and anime themes. It was developed by H5DEV Games and was released on November 18, 2021. It received very positive reviews from players.

Novena diabolos is an Ocult mystery adventure game. The main character, Park Joon-sung, has to find a single human woman who doesn't know who she is and get out of town safely.

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94%

Audience ScoreBased on 35 reviews

story5 positive mentions

grinding1 negative mentions

Unique and engaging premise mixing visual novel with detective and horror elements, involving randomized mystery and deduction.
Strong atmosphere and sound design that create a creepy, immersive experience with high-quality art and decent voice acting.
Good replayability due to randomized clues, human/demon roles, and multiple endings, encouraging multiple playthroughs to discover all content.

Repetitive and limited character storylines, with no variation in dialogue or plot based on the randomized identity of the human or demon; lack of extra narrative layers.
Several translation issues, minor bugs, occasional crashes, and UI quirks negatively affecting gameplay and clue interpretation.
Handholding in clue gathering and deduction reduces challenge; pacing can be slow especially in early parts, and limited bad endings with no true or secret ending to fully resolve the story.

story
23 mentions Positive Neutral Negative
22%
65%
13%
The story features a captivating main plot with multiple emotional and well-written character arcs, particularly within the girls' individual backstories, which evoke strong player engagement and replayability. However, some criticize the lack of variation in the overarching plot and endings, and find side stories and investigations repetitive or less compelling. Overall, the narrative combines good atmosphere and intriguing elements, though it leans on a fairly simple plot structure.
- “The main story is captivating and encourages us to reach the "good" or "bad" end.”
- “I really liked the story branches and enjoyed the investigations.”
- “The characters and story keep you engaged until the end with satisfying endings.”
- “My biggest issues with the visual novel are the individual storylines for each girl, which remain the same no matter if they are actual demons or not, and the overarching plot, which is resolved in one ending only and has no variations whatsoever throughout the ordeal, no matter which girls the reader picks, nor the number of times the game has been played.”
- “The story isn't anything special and the main protagonist starts off obnoxious but has some decent character growth.”
- “And who the human is also has no bearing on the overarching story apart from the final few scenes when you try to escape.”
atmosphere
11 mentions Positive Neutral Negative
73%
27%
The game's atmosphere is widely praised for its strong, immersive vibe created through excellent backgrounds, effective sound design, and engaging writing. It successfully delivers intense, creepy, and unsettling moods that enhance the story and gameplay experience, despite some modest production elements. Overall, the atmosphere contributes significantly to the game's appeal and replayability.
- “I loved the vibes, the atmosphere conveyed by the excellent backgrounds, decent sound design, and gameplay flow.”
- “The plot itself is fairly simple, but oozes atmosphere; particularly, the sound design and writing create unsettling undertones that can truly make your hair stand on end at times, despite the game's clear lack of budget.”
- “The atmosphere is just really good altogether, the intense and creepy parts are very well done.”
- “The general atmosphere is dreadful, as it should be.”
- “Sound effects and music are okay, nothing special, but add to the atmosphere.”
- “The plot is fairly simple but oozes atmosphere. The sound design and writing create unsettling undertones that make your hair stand on end, despite the game's clear lack of budget.”
replayability
9 mentions Positive Neutral Negative
56%
11%
33%
The game offers strong replayability through randomized elements such as human roles, clues, and murder locations, ensuring each playthrough is unique. Additionally, multiple character routes, hidden lore, and varied scenes encourage exploration, though some routes can feel repetitive. While lacking RPG elements, the game's evolving discoveries and randomized outcomes maintain player interest over multiple sessions.
- “The visual novel randomizes both the human and the clues needed by the reader every playthrough, making replayability enjoyable.”
- “Even after that, you still have lore to explore in terms of found objects, and since it's impossible to see every scene in one playthrough, replay value is high.”
- “Each playthrough of the game is different for the locations where the murders take place, so it is replayable. The character routes can get a little tedious if you are going for a specific character, but a cheat mode lets you pick any character as the human, which helps.”
- “Each playthrough is different based on the locations where the murders occur, making it replayable. However, character routes can become tedious if you are pursuing a specific route only to find out the character is a demon. There is a cheat mode that lets you pick any character to be human, which helps.”
- “The game has a fair amount of replay value and prevents future playthroughs from becoming stale too soon. Sadly, unlike Gnosia, this game lacks RPG elements, and the enigmas are quite simple once you get the hang of them. Therefore, future playthroughs rely mainly on new discoveries in each girl's route.”
- “The game has random results, which adds to its replay value.”
gameplay
7 mentions Positive Neutral Negative
43%
14%
43%
The gameplay offers a unique blend of investigative mechanics that stand out from typical visual novels, with an engaging story interwoven between gameplay sections. While the initial gameplay can feel slow and the character unappealing, randomized elements and multiple endings provide good replayability and keep the experience fresh.
- “I loved the vibes, the atmosphere conveyed by the excellent backgrounds, decent sound design and gameplay flow.”
- “A decent amount of replayability too to get the other endings, and the randomized element to the gameplay keeps the game feeling fresh even when replaying it.”
- “And it actually has proper gameplay, doing something special to stand out from the visual novel crowd.”
- “Now let me get this straight: the playable character is whiny and honestly the first 2 days of gameplay kind of suck.”
- “And as you would expect, I was screwed not as a result of my poor planning or gameplay, but because I received bad clues.”
- “For the gameplay, you're tasked to figure out who the 1 human is out of 5 women.”
humor
3 mentions Positive Neutral Negative
100%
The game's humor is marked by awkward and jarring tonal shifts, where comedic moments feel out of place given the serious and threatening situation the protagonist faces. Additionally, the main character's lack of depth diminishes the effectiveness of the intended humor.
- “At this crucial point in time, his GPS goes haywire and he finds himself trapped inside a mysterious foggy town full of weirdos looking at him funny.”
- “Also, the game suffers from jarring tonal shifts where the main character does something stupid that we're supposed to find funny despite being held prisoner in a town full of cultists who plan to sacrifice him, with four demons after him trying to murder him.”
music
3 mentions Positive Neutral Negative
100%
The music contributes well to the game's mysterious and immersive atmosphere, complementing the background art and story. While not particularly standout, the sound effects and music effectively enhance the overall experience and replayability.
- “The background art and music definitely contribute a lot to the whole addicting mysterious vibe.”
- “It has a very interesting story, good atmosphere and music, cinematic scenes, lovable characters, and great replayability.”
- “Sound effects and music are okay, nothing special, but adds to the atmosphere.”
graphics
2 mentions Positive Neutral Negative
100%
The graphics feature beautiful artwork with tasteful character designs that avoid excessive fan service, complemented by stellar audio and visually appealing visuals.
- “The artwork is beautiful and not overly fan service (the characters' clothing is reasonable and not exaggerated, avoiding typical oversized breast or revealing camera angles).”
- “Audio design is stellar, visuals are very nice as well.”
grinding
1 mentions Positive Neutral Negative
100%
Grinding in the game can feel tedious, especially when pursuing specific character routes, but varied playthroughs add replayability. A cheat mode that allows selecting any character as human helps alleviate the grind.