Guard Smith: Idle Defense is a tower defense game that is available for free on the Android platform. Developed by Funblue, the game is set in a castle that is being attacked by various monsters, and it is your job to protect it and the princess from them.

The game has cute pixel graphics that are sure to excite action lovers. You can choose from various mercenaries and cute pets to help you in your quest. The game combines elements of idle RPG and tower defense, making it a unique experience for gamers.

The game's controls are easy to understand, and the gameplay is fast-paced and engaging. You can play the game offline, which is an added bonus. Overall, Guard Smith: Idle Defense is a fun tower defense game that is sure to keep you entertained for hours on end.