If you are a fan of card games, Estimation Kings is a must-try for you. Developed by el3ab.com, this free-to-play game is available for Android platforms. Estimation Kings is a four-player trick-taking card game that challenges you to compete with online players from around the world. It is a perfect blend of strategy, luck, and skill.

Estimation Kings features multiple levels, each of which offers a unique environment to play in. You can create your own profile, make new friends, and chat with them. The game also allows you to challenge your Facebook friends. You can select your favorite avatar and use different gameplay card decks. Estimation Kings also offers predefined messages and emotions to communicate with other players. And the best part? It's a free-to-play game without any gambling involved.