BFFs: Unique Halloween Costumes is a paper doll dress-up game based on the childhood Best Friends Forever theme. A group of four BFFs want to make their upcoming Halloween unforgettable. While chatting online, they decide that they need epic costumes. The player's goal is to help each girl create a unique, memorable look.
The player initially receives access to four out of five categories of items (i.e., earrings, necklaces, headwear, hairstyles and outfits) to use to create a costume for the first girl. To unlock the one category, they must watch an advertisement.
Although the player can't alter each girl's standalone top and bottom pieces, hair color, eye color or makeup, they can select different items because the game offers items unique to a girl's personality, hair color or colors, and skin tone. Costume options include a fairy, a harlequin, an Egyptian queen, a queen of hearts, an evil queen, a pumpkin, a nun, a cowgirl, a popstar, a witch, a student spellcaster, a skeleton, an alien, a devil and a vampire.
BFFs: Unique Halloween Costumes presents the girls in pairs in their final looks against a Halloween theme backdrop. Each pair slides on and off the screen and then reappears via a repeating pattern. To capture a look for future costume ideas, the player must use the download icon or their screenshot or snip tool quickly.