A videogame forcibly automates something traditionally player-controlled in that genre of game.
A videogame forcibly automates an activity that--in other games of the same genre--have traditionally been controlled by the player. This can be during gameplay, or it can turn a story sequence that should have been playable into a non-interactive cutscene. Done well, automating a traditional gameplay mechanic can assist in genre-blurring and genre deconstruction. Done poorly, it can remove player agency in an attempt to make a game more accessible to mainstream audiences. This trope does not argue that cutscenes are bad, or that turning cutscenes into quicktime events would be a better choice. Rather, it refers to a design choice that subverts a most players' expectations about gameplay mechanics by reducing the level of interactivity and player agency. Gameplay Automation is the related trope where the automation is optional and can be interactive in that game by player choice.