Special Differences R-ummy is an interactive card game available on Android that challenges players to spot subtle differences between nearly identical images. With a focus on visual tracking, players race against the clock to unlock various levels. The game starts with four hearts, representing the player's chances to make mistakes. Each incorrect guess results in the loss of a heart, adding a layer of urgency and strategy to the gameplay. Players can earn additional hearts by completing daily tasks, encouraging regular engagement with the game.

The game combines elements of traditional card games with a unique twist, making it appealing to both casual players and those looking for a challenge. As players progress, they encounter increasingly difficult levels that test their observation skills. The combination of time pressure and limited attempts keeps the gameplay exciting and encourages players to improve their skills as they strive for high scores.