What started as a urban legend turns into a rondo-like mystery. Can these high school girls avoid a predetermined massacre? Based on the alternate reality game (ARG) developed by Project:;COLD, which ficti...

Oneshot~ Komori Mieharu is a high student who, due to his desire to be popular, often tells lies. He thinks that if can solve a Rubik's cube, he'll become popular in his class. However, a popular gal from th...

Original Webcomic: AC.QQ, BiliBili Manhua, KuaiKan Manhua

Ever since Kang Seol was a child, he's had strange dreams where he and several people wear masks while playing "World of Eternity," a board game full of quests and adventures. And although Seol was great at ...

This is a world where magic and science both exist. In this world, some people want powerful magic; some people pursue eternal truth. Blair, the protagonist, is a math teacher from a different world. Using bo...

Iroha is an average student newly enrolled in Cipher Academy, a Spartan school where students must crack code after code after code with barely enough time to catch their breath! Then a mysterious person nam...

What you need is "inspiration"! This is the beginning of a youthful riddle-solving comedy! Saki Junino, a student at Meichi Academy, has the looks, smarts, and athletic skill to be the best girl at Myochi G...

Overly rational. Sociopathic, even. Sean's unfeeling personality consistently drives people away from him. That is, until he wakes up after a night of heavy drinking in... an escape room? Now he must use his...

A relaxing getaway in paradise, or a death trap? A young man wakes up on a breathtaking beach, but he has no idea who he is or how he got there. Try as he might to piece it all together, untangling this mind...

Today, various requests for decryption are still available under the guidanphrasing office of Konichiro Senno, who runs a decryption office. Konichiro, along with his childhood friend Momo, unravels the thou...

Seven people received a "puzzle" and ticket from an unknown sender, and followed the ticket to a strange square house. A mysterious woman who came "out of curiosity" joined them, and what awaited those peop...

"You will be playing a game of death!"You awaken a captive in a sealed room after being abducted suddenly from in front of a row of coin-operated lockers!! There's a weird ring attached to your wrist contain...

The continuation of the Q.E.D. series after it was transferred to Shounen Magazine R.

Kanae tries to make friends with Tomoko by turning her into a real-life 3-D puzzle.

Japan: the Gambler's Paradise! The rich and beautiful Maria is well-known as a legendary gambler who will take on any challenge, no matter how unreasonable or impossible! But what happens when she meets a lo...

In the near future, a BCI controller that reads your brain signals and allows your consciousness to dive into the virtual world of the Internet has become extremely popular. Katsuro, who was arrested for a...

Pairing: Tobio x Shouyou Hinata isn’t getting much sleep these days because of a strange recurring dream–one that only Kageyama can free him from.

Three guys and three girls enter a dilapidated amusement park in the hope of finding their missing friend. The Birdcage Castle is supposed to be abandoned... But now they find themselves locked inside and ch...

Puzzle fanatic Daimon Kaito has been crazy about solving brain teasers, puzzles and riddles his entire life. He attends the prestigious Root Academy with Nonoha, but spends most of his time creating and solv...

Daimon Kaito is a high school boy, who loves puzzles. One day, the president of the student council gives him a mobile device and it leads him to an underground ruin buried in the school. He challenges an "i...

Haiba Sumio is a student at a Tokyo High School with an interesting ability... He occasionally falls asleep and wakes up with premonitions of the future written out on his "Dream Diary". With this ability, S...

Story about friendship and truth, with of course, a supernatural box. Begins in a middle school where a mysterious box appears before some boys.

"What is the boundary between game and reality?" The world is in danger. Strange juggernauts called "Angels" have started to appear all around the planet, presenting riddles called "Paradoxes" to whoever ha...

Junior high school student Yu Wakano, a transfer student from Tokyo, is assaulted with various logic and puzzle games at his new school. With the help of "Logical Girl" Shiba Itsuki, he takes on opponents in...