Brain Teasers

This app is a compilation of brain teasers and riddles arranged by difficulty (from green for "easy" to black for "hard"). Perfect to kill time, it will stimulate your brain combined with fun: you will need to be really fit for some brain teasers (so avoid trying to solve them during the breakfast !). However some other ones that are easier might be mentally solved, in overcrowded and overheated public transport during summer !