Top20 Software:
1 Halo 3 X360 120.000
2 Pokémon Diamond NDS
3 Dr Kawashima's Brain Training NDS 78.279
4 Pokémon Pearl NDS
5 Need for More Speed Carbon PYM PS2
6 More Brain Training From Dr Kawashima NDS 67.095
7 Nintendogs: Dalmation & Friends NDS
8 Resistance: Fall of Man PS3
9 Singstar Pop Hits Bundle PS2
10 Super Mario Galaxy Wii 54.079
11 Mario Party 8 Wii 52.530
12 Grand Theft Auto: San Andreas Platinum PS2
13 Nintendogs: Lab & Friends NDS
14 Call of Duty 4: Modern Warfare X360
15 Nintendogs: Dachshund & Friends NDS
16 Need for Speed Pro Street PS2
17 Singstar Pop Hits (software only) PS2
18 Motorstorm Game PS3
19 The Simpsons Game PS2
20 Assassin's Creed X360
** Wii Play with Wii Remote Wii 114.600
** Pokémon Diamond + Pearl NDS 167.319
Top10 Hardware:
1 Nintendo Wii Console & Wii Sports Nintendo
2 Playstation 2 Slim Console Sony
3 Nintendo DS Lite Black Nintendo
4 Nintendo DS Lite Pink Nintendo
5 Nintendo DS Lite Polar White Nintendo
6 Playstation 3 60GB Console Sony
7 Playstation 3 40GB Console Sony
8 Xbox 360 Premium Console Microsoft
9 Nintendo DS Lite Ice Blue Nintendo
10 Playstation Portable Slim & Lite Sony
Source: http://www.afc.gov.au/GTP/newmedia.html
Edit:
2007 value statistics: http://www.afc.gov.au/GTP/wnmgamesretail.html