Environmental PuzzlesUse notes, clues, and observations to solve puzzles. Sometimes the answer is right in front of you — and sometimes it’s hidden in the shadows.关于游戏Underground is a first-person horror adventure where you wake up lost, with no memory of how you got here — and no idea where "home" is. As you explore a strange and seemingly abandoned subway system, you begin to uncover notes, clues, and puzzles that guide you from station to