He's not that bothered by these abrupt and strange shifts of the environment. It's part a natural tendency to blend in with the scene set by a dream, and part his unwillingness to turn down a new game. (He was bored.) He hangs back by the wall, and observes as he always does: calmly and silently.

Until movement in his periphery catches his attention, he turns to get a better look, and--

Oh.

This will be interesting.