Franzis Gedaechtnistrainer (フランツ・ゲーデックトニストレーナー) is a Nintendo DS game developed by Franzis Verlag GmbH and released in Germany in 2008. It is a brain-training game designed to help players improve their memory and concentration. The game includes a variety of activities such as memorizing sequences, numbers, and images, as well as solving puzzles and mazes. It also includes a number of mini-games such as a memory game and a quiz game. The game also features a number of customization options, allowing players to adjust the difficulty level, the number of activities, and the length of play. Franzis Gedaechtnistrainer is designed to be enjoyable and challenging, while also helping players to improve their cognitive skills.