Those old machines are wonderfully fussy. You'll spend a fair bit of time turning components, studying connections, and wondering why a perfectly sensible-looking mechanism refuses to budge. The handheld device helps expose hidden electrical paths, although working out what to do with them is still your problem. It's particularly gratifying when one overlooked detail finally makes the whole contraption click. The complete game content is unlocked in this version, so you can follow the mystery through Wardenclyffe's abandoned halls and Tesla's scattered memories. The storytelling keeps a fairly light touch, leaving the machinery to do much of the talking. Worth a look if you enjoy the deliberate, hands-on puzzles of The House of Da Vinci.