Portal Proficiency new content is out now

Originally published at: https://linuxgameconsortium.com/portal-proficiency-new-content-out-now/

Portal Proficiency DLC releases for Bridge Constructor Portal on Linux, Mac and Windows PC. All thanks to developer ClockStone Software. Available now on Humble Store and Steam. Developer ClockStone Software are eager to share the good news. Their first DLC for their popular physics puzzle game Bridge Constructor Portal. Also now available on Linux, Mac…