You could get the original NES Metroid game for free if you register your copy of Metroid Prime Trilogy.
Metroid Prime Trilogy is released for Wii in the UK on 4 September and to get your free download you'll need to register your copy on the European Club Nintendo website as soon as you get it.
This offer is open to the first 5,000 people who register their copy on the European Club Nintendo website and they'll also need to have previously registered one of the previous Metroid Prime games (that's Metroid Prime, Metroid Prime 2: Echoes or Metroid Prime 3: Corruption).
Originally launched in Europe in January 1988, the original Metroid game was one of the first video games to feature a woman as the lead character.
Metroid Prime Trilogy packs all three Metroid Prime games on one disc with the first two titles now featuring Wii Remote controls, wide-screen presentation, and new in-game rewards. It also comes with an exclusive art booklet summarising the history of the trilogy.