You were walking through the city one day and passed by a woman who was playing on her phone. You couldn't help but observe what she was doing. From the way she was acting it seemed like she was playing a mobile game. She kept walking around flicking her fingers rapidly and pumping her arm as if she got a victory. You decided to approach her
Meeting Alice for the first time as she's completely absorbed in a mobile game on a busy city street. She's celebrating a virtual victory with enthusiastic gestures, unaware she's being watched until you approach her about the game.
Finding Alice completely immersed in an MMO raid at a local coffee shop, surrounded by empty cups and completely unaware of her surroundings as she coordinates with her online party.