Top similar games like Novena Diabolos:

Jabberwock Island—You and your classmates were ready for fun in the sun until Monokuma returned to restart his murderous game! Trapped in a kill-or-be-killed situation, your only hope rests in solving the island’s mysteries.

A new cast of 16 characters find themselves kidnapped and imprisoned in a school. Inside, some will kill, some will die, and some will be punished. Reimagine what you thought high-stakes, fast-paced investigation was as you investigate twisted murder cases and condemn your new friends to death.

In 2005, a sophomore student named Maha Igarashi boarded a private train to Soukyo City. However, she vanished upon alighting at the "Kisaragi" station. Five years later, her lover, Shizuno Yokoyama, initiated an investigation into her disappearance, unraveling a series of mysteries along the way.

The hero moves to a new city. However, along with him comes a masked killer who begins to kill his friends one by one... Make decisions to build your adventure. Can you stop him before it's too late?

Lost in a secluded forest, you encounter two mysterious girls. One Good. One Evil. But which is which? And who will you Trust in this thrilling, choice-driven Visual Novel?

A mystery adventure game and visual novel set on solitary Shironagasu Island. Discover its secrets, solve its mysteries, and escape from the ominous island!

Investigate murders, search for clues and talk to your classmates to prepare for trial. There, you'll engage in deadly wordplay, going back and forth with suspects. Dissect their statements and fire their words back at them to expose their lies! There's only one way to survive—pull the trigger.

This game is a deduction game where you collect evidence from a murder scene to find the murderer. Eight boys and girls are admitted to the school. At the school, there is a crazy ghost named "Milla" who haunts and kills people.

Need MORE stress in your life? Your goal is to find the White Lady that terrorizes the surroundings of Bayeux, France. Meet the creepy townsfolk, and attempt to solve the occultic mystery. Includes family feud, incompetent officers, and poisonous blueberries. Also contains playable Coopers.

Go on a discovery quest where the task is to solve the greatest mystery of Dr. Frankenstein. The game makes innovative use of Virtual Reality with a hidden object model and crafting simulations combined with the fight against time. Become the time master and carry on Dr. Frankenstein’s legacy!

Cat in the Box is a horror adventure game. Help the poor girl explore the mansion and escape from unknown entities that are pursuing her. Use a variety of tools and your wits to overcome any challenges you face. At times, you'll even have to wake yourself from nightmares to survive.

Wish Eater is a horror game with touches of action where you explore a building in search of a girl who disappeared without a trace. Solve puzzles, search for clues and recreate her steps to discover the mystery of her disappearance. Depending on the investigation you will reach different endings.

You’re trapped inside a haunted house, stalked by angry ghosts. To survive, you’ll have to run, hide, strategize, give gifts, chat, flirt… Wait, what kind of game is this? Oh right, it’s a point-and-click survival horror dating sim!

it's always monday - is a first person exploration game

You wake up in an unfamiliar, snowy place. You don't know how you got there or who you are. Solve the mystery, avoid or defeat enemies, and escape... An atmospheric, story-rich, post-apocalyptic walking simulator with puzzle elements and crafting mechanics

The Chrono Jotter is a mystery and suspense visual novel that follows the steps of Ran Ibuki, a high-school student, as she investigates against the clock to discover who's killing her new classmates -- and avenge the murder of her girlfriend. Are you ready for this savage feast of life and death?

Train of Afterlife is a mystery, psychological, horror Visual Novel.

is a blend between Visual Novel and Adventure Game. Follow the story of Elcia as she time travels and solves the mysteries of her surroundings.

The game will tell you about a person who mistakenly got into a mental hospital, from which he needs to get out. But what awaits him there ... Who will meet him on his way? What obstacles will he have to overcome in the time he spends there?

In Rise of Insanity, as a doctor of psychology you will explore the darkest recesses of the human mind. Overcome your fear to find the truth behind the tragedy that has befallen your family.

Okaeri is a VHS Japanese psychological horror game about a middle school girl and her mother who recently moved to a new house.

A secluded mountain resort, 10 friends, 1 murderer. Investigate, interrogate and present evidence as you solve various mysteries throughout the night. Will you be able to reach the truth and uncover the culprit’s identity? Or will your deductions lead you to blame someone completely innocent...?

The Silver Case – the debut title from world-renowned developer SUDA51 has been fully remastered and localized to English for the first time ever!

This is a terrorist decryption adventure game that took place in 1913.

“喂喂，求求你啦！救救我！” ——你接到这样一个电话 发出这样的求救，给你打电话的人，是一名被监禁的少女

Ethani lost her way and ended up at the Lighthouse. Where did she come from and where should she go? Explore this fantasy Visual Novel to reveal her past and set sail once more...

After a life threatening accident, a young girl is thrown into a surreal world that may not be as beautiful as it seems.

"Fried Chicken Nuggets and Angels" is a text based adventure game with the theme of a detective story. The killer "Rooster" who killed six innocent girls has committed a new crime.Fortunately, at the scene of the seventh homicide, the police found important clues pointing to the murderer...

Is what is recorded in a photograph necessarily true? I don't think so. "But I think that even if it's a fake photo, the emotions of its creator are real after all." She said. So, your memories, then, must be real? Visual novel "Frozen Memories" gives you a fictionalised version of a real memory.

Nine participants awaken, trapped in an underground facility. To escape, they must play a game with deadly consequences. Who will live, and who will die? The choice is yours. Let the Decision Game begin…

What would you do if you suddenly found yourself quarantined within an underground nuclear facility, isolated, and forced to play a series of death games alongside a group of strangers...?

A mystery visual novel about six students forced to play a 12-hour long killing game.