N-Back is an Android game developed by Piotr Wieczorek that aims to improve your memory and intelligence. The game consists of matching features of symbols that appear on the screen with ones that have appeared before. By doing this, you can improve your short-term memory and fluid intelligence.

The game's concept is based on the N-back task, which is a continuous performance task that is commonly used to measure working memory and executive function. N-Back offers several levels of difficulty, allowing players to gradually increase the challenge as they improve their performance. The gameplay is simple and straightforward, with a clean interface that is easy to navigate. Overall, N-Back is a fun and engaging way to exercise your brain and enhance your cognitive abilities.