Monsters At School is an Android game that challenges players to collect puzzle pieces featuring "Horror" style monsters. The game is set in a school, with monsters hiding in various locations such as the teacher's room, sports room, basement, playrooms, corridors, restrooms, and classrooms.

To complete the puzzles, players must gather the puzzle pieces and assemble them. Once a puzzle is finished, an animation plays, creating the illusion that the monster is moving towards the player. This animation is accompanied by eerie music, adding to the suspense. The animation concludes with the screen shaking and champing sounds, further enhancing the scary atmosphere.

Monsters At School offers puzzle sizes of 3x3 and 6x6, providing players with different levels of challenge. With a total of 15 different pictures to complete, there is plenty of content to keep players engaged.