The objective of CritterMatch is to find a pair of matching characters, known as "critters," that are displayed face to face. The player is presented with two groups of critters, one on each side of the screen.
The player's task is to navigate through the critters on one side to find their perfect matches on the other side. The player can move the critters around to compare them, but each critter can only be matched once. The player must carefully examine each critter to find the correct pairing.
The game runs completely in a web browser, requiring no downloads or registration. The game's challenge lies in distinguishing between similar-looking critters and using trial and error to find the correct matches. As the player progress, the game presents increasingly difficult levels, with more critters to match and limited time to find the correct pairs.