Mermaid World is a fantasy game that takes you on a tour of an undersea mermaid world, complete with many characters to unlock. You can learn about your mermaids and what makes them happy, and you can send them on quests to find certain objects. They also perform duets to attract fellow mermaids, and you can earn coins to purchase even more amazing treasures.
The first time you open Mermaid World, a tutorial will take you on a tour of the game's features via pop-up windows. You'll see how to learn about your mermaids and the different activities they can engage in, and then it's up to you to increase their happiness as you explore their world together. The mermaids' happiness is your main concern, and you can see how you're doing by tapping the bar at the top of the screen. This will bring up a page with all of your mermaids on it, and an icon next to each of them depicting their level of happiness. Tapping on a mermaid on this page will take you to her profile, and you can see things she likes, her trinket, and her decor preferences. Collecting any of the things she likes will increase your mermaid's happiness, and you can do that by purchasing items, sending her on a quest to find them, or unlocking her mermaid friends.
If you've ever had a fascination with mermaids, this is a great game to try. It's free, the graphics are good, and there are endless options for how you can decorate the mermaids' realm. While no purchases are required to play, there are plenty of pearl and coin packages available if you choose. These range in price from $1.99 for a pile of pearls to $49.99 for a crate of pearls, with many other options in between.