The Wii console, along with its software and peripherals, topped Amazon.com's bestselling list for videogames in 2009.
The Wii Remote controller was second bestselling videogame product, followed by Wii Motion Plus addon, which was released on June 8th. The Nunchuk and Wii games such as Wii Fit and New Super Mario Bros. Wii round out the top slots until the first non-Wii product, Modern Warfare 2 on the Xbox 360, enters at #9.
Game companies typically announce numbers of units sold only when it behooves them to, so independent data from retailers is vital. While not necessarily gaming-based, Amazon.com is still the leading online retailer. On Amazon in 2009, the Wii console and related products crushed the competition.
Many factors have had pundits predicting that Wii sales will continue to fall, including Nintendo slowing production of the console and the emergence of the PS3 in 2009. While this list at Amazon is by no means exhaustive of all videogame sales, it remains an important indicator that, for now, sales of the Wii remain strong.
The entire top 100 list can be viewed at Amazon.com but I've listed the top 20 here for your viewing pleasure:
02. Wii Remote controller
03. Wii MotionPlus
04. Wii Nunchuk controller
05. New Super Mario Bros. Wii (Wii)
06. Wii Fit Plus (Wii)
07. Wii Sports Resort (Wii)
08. Wii Fit (Wii)
09. Call Of Duty: Modern Warfare 2 (Xbox 360)
10. Mario Kart Wii (Wii)
11. PlayStation 3 Dualshock 3 controller
12. Wii Play (Wii)
13. Call Of Duty: Modern Warfare 2 (PS3)
14. Wii Wheel
15. Assassin's Creed II (Xbox 360)
16. Halo 3: ODST (Xbox 360)
17. PlayStation 3 120 GB
18. Uncharted 2: Among Thieves (PS3)
19. EA Sports Active (Wii)
20. Left 4 Dead 2 (Xbox 360)