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.

[1][2] Players are tasked with designing and constructing bridges to get one or more trucks from one location to another at Aperture Laboratories under the supervision of the artificial intelligence GLaDOS.

Players are tasked with building bridges using struts (which can be converted to road segments) and cables, anchored to pre-designated fixed points on the level's walls.

These vehicles are released one at a time at regular intervals, and tests to see if the bridge components stand up to repeated stress or if the crossing of paths causes any collisions.

[9] IGN reviewer TJ Hafer found the game to be simple and intuitive while still managing to offer and fulfilling level of depth and challenge.

[2] Although he did not think the humor was on par with previous Portal games, he noted that the aesthetics and sound design were reminiscent of those earlier titles.

[2] Destructoid writer Jordan Devore agreed that the game was straightforward and that constructing structures was easy to carry out.