The team of BrainSportHero.com is supporting some other partner projects in the field of brain training, puzzles and self improvement:
Sudoku 1on1
Play Sudoku against other players on the same field at the same time with Sudoku1on1.com. Fight for every cell and number.
BrainBrix – Train Your logical thinking
BrainBrix.com offers a new kind of brain teasers that helps to train your logical thinking skills. These puzzles are related to classical Sudoku exercises but the rules are quite diffenrent. The exercises provide a wide range of field types and difficulty level.
QuizDB.eu
Have a look at the Database of Quiz Questions and Trivia Questions QuizDB.eu.
Hirnsport.de
This site provides brain traning exercises and content about self improvement and brain hacks in german language.