I built Tic Tac Toe 14 years ago, when I was taking my first steps as an Android developer. It started as a simple learning exercise: make a clean, classic Tic Tac Toe game and understand how Android apps work. Over time, that small experiment grew far beyond its original purpose, reaching 1M+ downloads and becoming a full board-game experience with Tic Tac Toe, Gomoku, solo play, local multiplayer, online matches, achievements, leaderboards, statistics, multiple AI difficulty levels, different board sizes, themes, and more. What makes it special to me is that it still carries the spirit of my first Android project, but has grown together with me as a developer.