On the top there is a analog stick, which is used for example in first-person shooters for moving in space, in combination with the movement of the line of sight on the Wiimote, this is in my opinion the best for console management of these games genre - if there were only more high class selection for the Wii. Two buttons on the front are used differently depending on the game.
The main thing is, however, as with the Wiimote, acceleration sensors. Register movements and put them on the console.
So you control with the Nunchuk in Wii Sports or Wii Fit Boxing obvious way the left beater, in the Zelda shield, the archery in Wii Sports Resort hooking the bowstring. In The Conduit the analog stick is used for movement and grenades can be thrown there by a simple throwing motion.
Unlike for the Wiimote there for the Nunchuk no antiskid envelope of Nintendo. Is attached to the Wiimote MotionPlus expansion, the Nunchuk connects directly there. Power is supplied via this cable, additional batteries are therefore not necessary, which will only drain faster in the WiiMote. The build quality is excellent as with all Nintendo controllers, wear you never actually reads and myself also not yet arrived. The analog stick could break irascible natures possibly, but even that seems unlikely me. Thus, this individual actually makes Nunchuk primarily as acquisition of a second player sense. As the price (just in the black version currently) is really high, but you should think carefully about whether you really need, because in my opinion there are not many opportunities to do so. Except for the boxes of Wii Sports, a second Nunchuk is as far as I know also in Dead Space Extraction multiplayer actually used. Whether the purchase is worth, ultimately everyone has to decide for himself according to his budget.
Occasionally one hears complaints about the cable length, however, so I've never had real problems. While there are for the solution with wireless Nunchuk (even in black and is actually a good idea), but these are not a real Nintendo goods and thus to compare in terms of quality in no case, more than three stars in Amazon reviews come in section does not extend.
Who the package Nintendo Wii Black (incl. Wii Sports & Sports Resort + Motion Plus) has not yet appointed an equal WiiMote black + MotionPlus, finds the matching color additional Nunchuk here.
Conclusion: The instrument itself deserves clear 5 star, since the control of many games has been extended by really smart on the second hand. Because of the high price, but as the excellent device itself can not help it, I draw from a star in fun, because that is so but spoiled something.
Whether an additional purchase is really necessary, will be carefully considered. If the Originalnunchuk is broken, can you do with this replacement purchase certainly nothing wrong.