Help the beautiful mermaid grow her tail! The little mermaid wants to have the longest tail in the underwater world, let us help her achieve her wish. You can control the mermaid to collect different colored tails. Be careful of the terrifying obstacles on the road, and don't let the little mermaid's tail be cut off. mermaid game,tail game,underwater game,runner game,casual game,kids game,collect game,1 player game,challenge game,mermaid tail,longest tail,swimming game,online game,free game