Test Chamber 16 is Portal 2‘s final main puzzle room and it’s definitely one of the game’s trickiest. It combines excursion funnels, repulsion gel, and turrets in a way that can stump even the most ...

Valve continues to spoil us. After teasing three minutes of the story and showing off the funnels and plates, it's released another four clips of new puzzle ideas that'll be present in the final game.