Players compete in a memory-matching challenge against varying combinations of creatures that appear on the screen. The objective is to recall the locations of matching pairs, with increasing difficulty levels brought about by new types and quantities of monsters introduced as the player progresses.
The core mechanic involves examining a grid of pieces, each showing a unique image of a monster, and attempting to find matches among them. When a match is made, those pieces disappear, and the player is rewarded with more opportunities to make additional matches before time runs out.
The game runs in a browser without the need for download or registration. A timer adds pressure as the player strives to clear the screen and beat their previous high scores, with new challenges presented after each completed level.