Press the plunger to push the rings through the water and onto the posts. Sounds easy but can take lots of fun filled practice. These water games, one of our most popular toy items, are shaped like a cell phone, has a pop sockets, and requires no batteries. The simple push-button play swirls water to move rings onto posts. This battery-free travel game features a fun unicorn theme that kids love. Recommended for ages 3 and up.