“Schéiss op de Feeler!” or “Shoot the Error” was a game designed and developed by author and Luxembourgish teacher Jerome Lulling, who has written several books on the Grand Duchy’s language.
Users can decide between Levels 1-5 or 6-10, the first going through simple errors, and the latter levels which will even force native speakers to break out into a little sweat.
The “grammar shooter” is freely accessible here and can also be played on mobile devices, although it is best suited for desktop.
