To prevent cognitive deterioration and to maintain and enhance cognition in people with cognitive decline due to dementia, it is necessary to provide appropriate brain exercise and cognitive stimulation.New stimuli stimulate the brain, and activities that stimulate and train cognition strengthen the brains network and enhance cognition. These efforts are one way to manage dementia.The six domains of cognition (orientation, concentration, spatial power, language, calculation, and memory) were composed of 20 games according to the domain, so that the game could be played by selecting easy and difficult according to the cognitive level of the target.Even though it is invisible, if you do a little bit of cognitive training every day, it will lead to cognitive improvement.