Ha! They write: "It’s the kind of game that you can pop into for fifteen minutes at a time, or that you can play while doing other things." They haven't got a clue!;)
I don't think I have ever spent only 15 minutes on Glitch. I spent more than 15 minutes refreshing. Continually. For days...waiting for the closed sign to go away....
Play while you're doing other things?? I was nearly losing my mind last night mining Ajaya, keeping up 3 IM conversations, and getting teleported to greet new players every five minutes. What's the other thing I could have been doing at the same time? I was glad I was managing to breathe and stuff. ;)