Brain games are activities designed to improve cognitive functions such as memory, attention, and problem-solving skills. These games can take various forms, including puzzles, quizzes, and strategy games, and are often available in both physical and digital formats. They are popular among people of all ages and can be found in apps, websites, and board games. Many studies suggest that engaging in brain games may help maintain mental sharpness and delay cognitive decline as people age. While they can be entertaining, it's important to note that their effectiveness can vary, and they should be part of a broader approach to brain health, which includes physical exercise and a balanced diet.