sumZ is a free puzzle game developed by Jeffrey Stone Gamelab LLC for Android devices. It falls under the category of board games and is a great way to pass the time.

The game is easy to understand and play. The objective is to connect like numbers in any direction and create their sum. The more numbers you connect, the higher your score. The game gets more challenging as you progress, as you need to think strategically about which numbers to connect to get the highest score. The game also has a time limit, which adds to the excitement.

The game has a minimalist design, with calming colors and simple shapes. It is easy on the eyes and perfect for playing during short breaks. The game also has a relaxing soundtrack that complements the gameplay.

Overall, sumZ is a fun and addictive puzzle game that is perfect for anyone looking for a quick and challenging game to play on their Android device.