Since "free" downloads from unofficial sites often come with malware or viruses, here are the safest ways to play:
Be very careful with sites offering "Free APKs" or "Cracked PC versions." These files can steal your data or damage your device. If you want the full 2.11 experience with online levels, the official $1.99 version is the only way to guarantee your account and progress stay synced. Since "free" downloads from unofficial sites often come
These are official, free "mini-games" that use the 2.11/2.2 engines and offer unique levels not found in the main game. Since "free" downloads from unofficial sites often come