https://play.google.com/store/apps/details?id=com.grapevinegames.fourtiles

Four Tiles is a unique high score game based on focus, memory and melody. Inspired by the popular Simon memory game, Four Tiles brings a beautiful and clever twist to the original by challenging the player's memory AND focus abilities, as well as providing a mesmerizing melodic experience that will help the player relax.

Four Tiles is completely free to play but has non-intrusive ads. The game has been carefully designed to appeal to a generation of mobile casual game enthusiasts who are looking for a unique challenge on their handheld device and crave something different. Four Tiles clearly stands out from the rest with respect to gameplay, visuals, and concept.