First, please, unzip the zip file. To run the application, you will need to open the HTML file via Firefox ESR ( or you will need to install a local server via Python, Node or PHP ( Use the CTRL + "+" and CTRL + "-" keys to adjust the application dimensions to the size of your screen.



Source code

Erstellt von


Humberto José Bortolossi and Rogério Vaz de Almeida Jr.


Spanish Version: Fabio Ximeno
French Version:Ronald Pierre Alain Pétin and Yves Jean Robert Gounot

Unterstützt durch

The Ministry of Science, Technology and Innovation and the Ministry of Education in Brazil

Inspired by the cover of the book Gödel, Escher, Bach by Douglas Hofstadter, this is an interactive game to exercise three-dimensional thinking in an interdisciplinary work with English, Spanish, French and Portuguese languages. The game runs on smartphones, tablets and desktop computers.

In this game, the user must manipulate a virtual special solid and identify three letters of the alphabet. With these three letters, he or she must compose a word or an acronym in the chosen language. To assist him or her in the viewing process, coordinate axes and coordinate planes can be displayed in the software. In addition to the vocabulary exercise and the cognitive exercise of perception of three-dimensional forms, the software can also be used to address questions on symmetry (of the shape of letters) and counting (of the possible words for a given set of letters).