Tina Costume Party. Tina has planned a fancy costume party at the beach and needs help with the preparations. Bake a delicious cake and decorate it with tasty fruit and icing. Which outfit do you like best? Pick a cool costume and add matching accessories and make-up. You did great, Tina looks super cute! Finally, decorate the party location and enjoy the evening! This game can be played on all devices. Enjoy and have fun in playing this free online mobile girls game on Round Games. Good luck.