First-person puzzle game challenges and thrills - CMU The Tartan Online

via games puzzles - Google News http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNHjQLGUhRwGuINYiTPpISlF1285DQ&url=http://thetartan.org/2013/2/25/pillbox/antichamber