If you want to create your own level of this game, just follow these instructions.[br][br][list=1][br][*]Download or make a copy of any of the materials.[br][*]Editing it (with GeoGebra Desktop or with the web app) write [b]configurar = true[/b] in the input bar. You will see several points as in the following example.[br][*]Just drag the points to modify the shape of the play field, the goal line or the starting point. It is recommended to fix the green dot to the grid, but not the other points.[br][*]Write [b]configurar = false[/b] in the input bar.[br][/list][br][br]Ready! You can play with your new level.[br][br]If you want to see the text in Spanish: write [b]english = false[/b]. [br]If you want to see the text in English: write [b]english = true[/b].[br][br]It would be great if you share your level, so we can add it to this GeoGebraBook and spread the challenge. Upload your file to GeoGebraTube and post the link as a comment to this book ([url=https://tube.geogebra.org/material/show/id/1257381]here[/url])[br][br]Have fun!