We thank Bruce von Eck (a teacher from Cali, Colombia) for sending this idea.
I also learned with my students to play a game called "Stop!". It's similar to the more difficult version of "Fill in", except that the students have to fill in all the categories.
The first one to finish says "Stop!" and everyone has to put down their pens. The answers are then checked by the teacher and if they are all correct they are shared with the other students.
Each teacher can work out a points system whereby all students earn points for correct words but the student who finished first obviously gets an extra set of points.
At the end of the game, the student or team with the most points wins.