Abstract: A free standing versatile baby barrier system comprising individual modules each having a flat stiff mat-like horizontal component and a flat vertical component of similar width attached at one end near a mid-section of the horizontal component such that the width of the vertical component spans the width of the horizontal component. The vertical component is of sufficient height to prevent the baby from climbing over the barrier to the protected side, and the horizontal component is of sufficient length to require the baby to stand or crawl on the horizontal component thus securing the horizontal component to the floor by the baby's own weight. Individual modules may be detachably linked together with hinge members attached to the lateral edges of the vertical components of the modules, allowing for rotation of the modules relative to one another to conveniently adjust the barrier system.