Twelve is a captivating puzzle game designed for iPhone users, featuring a total of 72 unique levels that test players' pattern recognition, memory, and reflexes. Each level presents a distinct challenge, ensuring that players remain engaged and entertained as they navigate through abstract puzzles. The game is free to download and play, with non-intrusive ads that only appear for hints and level skips, making for a smooth gaming experience without disruptive interruptions.

Accessibility features include a color-blind mode that enhances gameplay by adding distinct icons to critical areas, making it more inclusive for all players. Although currently available only in English, plans for future language support are in development. An upcoming update is also anticipated to include a 'Remove Ads' bundle, allowing players to enjoy the game without advertisements while still accessing hints and skips.