Openigma -オープニグマ-　-ステージ型謎解きパズル is a puzzle game developed by G.Gear.inc for Android platform. The game is free to play and falls under the Puzzle category. It is a stage-by-stage mystery solving game that has numerous boxes with different puzzles to solve. The puzzles range from simple to complex and completing each box unlocks a new theme. The game provides hints and answers for each box, which makes it suitable for beginners as well.

The game is easy to play, and all you need to do is select a box and tap on it to start solving the puzzle. You can also use long press or swipe to unlock the box. The game has a hint button on the top left corner of the screen that provides hints and answers.

Openigma -オープニグマ-　-ステージ型謎解きパズル is perfect for those who love escape games, brain teasers, and mystery quizzes. It is an excellent way to exercise your mind and have fun at the same time. The game is also a great option for those who love boxes and puzzles. Overall, the game is an excellent choice for puzzle game enthusiasts and offers hours of engaging gameplay.