Some fun online monster games for girls are Monster High Design Studio, Devilish Cat, and Creeptastic Catacomb. Monster High Design Studio is a game where the player chooses a character from Monster High and designs her look and wardrobe.
In Devilish Cat, the player is a cat that tries to eat goodies in the house and hide them from its master. A meter during the game must be filled up to pass each level. Diamonds are also collected during each level. Creeptastic Catacombs is another Monster High game for girls in which the player goes around an underground catacomb with her friends.