Puzzle Box – Brain Fun offers gamers the opportunity for intellectual stimulation and fun through engaging puzzles that require strategic thinking as well. Players usually start by selecting their difficulty level (Easy or Hard) based on personal preferences, with each mode offering unique challenges to challenge players' cognitive abilities. The game features a variety of levels ranging from simple word games like "Word Search" up until more complex logic-based riddles and jigsaw puzzles that test problem-solving skills.
The core gameplay involves navigating through the puzzle boxes while trying not only to solve them but also ensuring they are completed without any errors or mistakes, which adds an element of challenge. The game offers a range of modes such as "Puzzle Mode," where players must complete multiple levels within one session; and "Brain Race" mode that challenges users with more complex puzzles.