Openigma -オープニグマ- is a stage-based puzzle game developed by GLOBAL GEAR K.K. for iPhone users. In this game, players are presented with numerous boxes and puzzles to solve. The puzzles range from simple to complex, making it an exciting and challenging game to play.

To complete a theme, players need to solve all the mysteries in ten boxes. To open a box, players can tap on it, long-press, or swipe. Each time a box is opened, it triggers a change in the game's world, making it more immersive. If players get stuck, they can use the hints and answers available by tapping on the hint button on the top left corner of the screen.

Overall, Openigma -オープニグマ- is an engaging and entertaining puzzle game that will keep players hooked for hours. It is a full version game available in the games category of the App Store.