Grammatik Duell is an entertaining and educational matching game app that helps you practice your German grammar and spelling in a fun way. Whether you need to brush up on parts of speech, conjugations or declinations, tenses and types of sentences - no matter what you need, the various grammatical areas can be combined with each other and practiced. With one click, the appropriate themes are chosen and you can start right away. Matching pairs must be found, either by purely assigning terms to the proper categories or as a concentration-enhancing matching game.