
The texture has since changed and was given more detail. At the time, the Hard Light Bridge possessed a texture similar to the one found in Portal: Still Alive.
The Hard Light Bridge was officially introduced briefly in a GTTV promotional showcase of Portal 2. ATLAS and P-body must utilize this method to pass one of the chambers of the Mobility Gels Cooperative Testing Course. The Mobility Gels are applicable on the bridge, allowing Test Subjects to use the gels in places where it normally would just fall through. To achieve this, each emitter is attached to a support beam in a lineup, as the quality and strength of the surface is tested against a concrete wall. In the factory, it is revealed that the bridges, like the Sentry Turrets, are required to pass a quality monitoring before they can be put into testing. In the cooperative campaign of Portal 2, ATLAS and P-body are sent to the Hard Light Bridge Factory in the Hard-Light Surfaces Testing Course. Vertical bridges act more as portable walls that can be used as obstacles (for example, to intercept Weighted Storage Cubes). Horizontal bridges can be walked upon, and players can continue seamlessly along them through any portals they pass (given enough headroom). The Hard Light Bridge is a translucent but solid surface that can be redirected through portals to reach or serve as a blockade to certain areas.īridges may be emitted horizontally or vertically depending on the position of its emitter.