Bridge Constructor Portal is an engineering simulation and puzzle video game developed by ClockStone and published by Headup Games. The game is part of the Bridge Constructor series, and incorporates elements of Valve's Portal series, taking place in Aperture Laboratories. The game was released on Android, iOS, Linux, macOS and Windows in December 2017, and for the Nintendo Switch, PlayStation 4, and Xbox One in February 2018. By August 2018, the game had sold over 500,000 copies.