Mr. Mustachio : 100 Rounds is a free Android puzzle game created by Shobhit Samaria. The game has a unique and challenging gameplay that is a twist on the grid search puzzles. The objective of the game is to find the row or column that matches a given rule and a corresponding value for 100 different grids.

The game offers over 70 different types of rules that become crazier and wackier with each passing grid. The game is easy to pick up and play with one-touch gameplay in portrait mode. The game also offers daily challenges, four different types of aids/power-ups, and comprehensive statistics to give a glimpse of how well you have been playing the game.

Mr. Mustachio's character adds a fun dimension to the game with a cute way of visually depicting the progress through the growing mustache. The game is uncomplicated with no worlds, levels, difficulty settings, boosts, bonuses, or achievements, and it has a single objective to complete all the rounds. The game is single-player and works offline.

Overall, Mr. Mustachio : 100 Rounds is a challenging and interesting puzzle game that is perfect for those who love math, brain training exercises, and testing their reflexes.