Shameless on 16 May 2008
I probably should've worded the OP differently as there is a lot of hate against the word 'casual' from Nintendo fans.
I'd use the word casual in terms of depth. Wii games are simple and great fun, but the majority lack the depth I usually look for when paying £40-50 for a game (*waits for flames*, try to look at this objectively).
@DKII
The Wii has hurt the sales of PS360 games and consoles HUGELY. Just look at the recent NPD figures. People are now choosing Mario Kart and the like over GTA, completely reversing the trends of last generation.
