Knock em Out is a free Android game developed by Gezellig that falls under the sports category. The game is all about boxing and the player has to beat their opponents to emerge victorious. The game offers an intuitive one-touch control system that allows players to control their boxer with ease. The graphics of the game are beautiful and add to the overall experience.

The game is challenging and requires the player to have good reflexes and fighting skills to progress. The opponents get tougher with each level, making the gameplay more engaging. Overall, Knock em Out is a great game for boxing enthusiasts who want to test their skills and become the best boxer out there.