If you’ve been to PAX, you know that just about everybody hands out promotional swag. Most of it is pretty, but t-shirts, buttons, and temporary tattoos don’t really have much to do with the games they advertise. Nicholas Trahan, on the other hand, is a bit more thoughtful. He was handing out multicolored pens for Liight, a color mixing game from Studio Walljump. It also turns out that he’s a handy source of insight about the game’s inner workings, the art of feedback in game difficulty, and the secret origins of Studio Walljump.