Portal (2007) not only brought strong affective responses to inanimate objects like the companion cube, or the terrifyingly inhuman character of GLaDOS, it presented a complex logistical apparatus in Aperture Science’s Handheld Portal Device. While the extra dimensional capabilities of the device would seem to permit instantaneous advancement, its rigid limitations force players to rely on a complex range of actions and effects (from utilizing the conservation of momentum to the creative consideration of external targets). While initial outings offer intuitive solutions, later puzzles force players to reconcile their imaginations to the kinds of flexible physics that come from thinking with portals.