  In 1680 Cassini proposed oval curves as alternative trajectories for the
visible planets around the sun. The Cassini ovals were of course overshadow by
the Kepler's first law (1609), namely the planets move around the sun
describing conic orbits. Here we describe the possibility that the Cassini's
idea works at larger or smaller scales. Indeed, we consider the Spiric curves
(which are a generalization of the Cassini oval) and present the first steps
towards a Spiric gravitational theory. We show that from our formalism an
ellipse associated with a planet can be obtained as a particular case.
