Not a Wall is an unscripted performance piece I conducted in Half-life 2 back in July 2006 and is based on Magritte's The Treachery Of Images. The work's protagonist will not attack unless attacked and must return to the graffiti until complete. The final killer, inspired by my actions, falls fowl of his own passivity. Not a Wall is one of a series I’ve produced for a soon to be completed research degree on game surveillance technologies and techniques.