Playing brain training games regularly will not improve your brain power.

Stojanoski, B., Wild, CJ, Battista, ME, Nichols, ES, and Owen, AM (2021). Brain training habits are not associated with general benefits to cognition: an online study of over 1000 "brain trainers". Journal of Experimental Psychology: General, 150 (4), 729-738. https://doi.org/10.1037/xge0000773

The idea of enhancing general cognitive function in a game called Brain Training has become an intuitive and attractive concept to the average person, and it is a project that is developing into a large industry.

However, whether brain training can truly improve cognitive function continues to be debated, with some studies in the literature employing imprecise criteria to give the appearance of improved cognitive function. Examples are often the use of single training and outcome measures on small samples.

To remedy these limitations, the authors of this research paper conducted a large online survey to validate them.

The study involved more than 1,000 participants, up to five years, and used a variety of brain training programs to assess cognitive function, measuring attention, reasoning, working memory, and planning.

The results showed no relationship between the experimental measures of cognitive function and the duration of brain training, without finding whether the participants were still doing brain training or not.

The results seem to be similar regardless of the age of the participants, the brain training program used, or the expected benefits.