 His "Opuscula Varia", which contains a treatise on the 613 commandments, a religio-philosophical and controversial work aiming to demonstrate to the Jews the truths of Christianity, and an introduction to the Cabala followed by a compilation of its rules and dogmas, went through four editions (Pavia, 1510; Augsburg, 1515; ib.1541; and Basel, 1597).Riccio wrote besides these works about ten others, all in Latin, on various religious, philosophical, and cabalistic subjects, which appeared in Augsburg in 1546 and were reprinted in Basel in 1597.