Group formation in systems normally results in a delicate equilibrium of aligning, and attractive interactions. We discovered that a mere motility shift of those people in response to the perception of their peers induces cohesion and group formation. We tested this principle at a true method of particles whose motilities are commanded by an external feedback loop. For fields of view, folks accumulated into groups that were nonpolarized without needing reorientations. For fields of view, cohesion could be accomplished by lowering the reaction threshold. We expect this motility-induced cohesion mechanism to be applicable for the self-organization of living systems, but also for the design of systems that are robust and scalable autonomous.