  This work deals with a system of three distinct species that changes in time
under the presence of mobility, selection, and reproduction, as in the popular
rock-paper-scissors game. The novelty of the current study is the modification
of the mobility rule to the case of directional mobility, in which the species
move following the direction associated to a larger (averaged) number density
of selection targets in the surrounding neighborhood. Directional mobility can
be used to simulate eyes that see or a nose that smells, and we show how it may
contribute to reduce the probability of coexistence.
