Gameplay is split between the character evolving their own desires by exploring the school campus, and fighting monsters called "daemons" in the Otherworld.

[2] Monark takes place inside Shin Mikado Academy, a high school sealed from the outside world by a barrier and enveloped in a mysterious mist that drives the students mad.

[13] Destructoid severely criticized the game's repetitive nature and concluded, "There are some novel ideas here, and if you’re looking for something outside the RPG status quo and with a darker vibe, Monark could fit the bill.

"[9] Nintendo Life praised the high-risk, high-reward combat system, creepy aesthetics, interesting story, and replay value, while criticizing the lackluster graphics, repetitive environments, and lack of enemy variety.

[16] In Japan, the Nintendo Switch version sold 10,521 physical units, making it the sixth best-selling game during its first week of release.