Well I have just upgraded my Wii (I assume too System 3) and the best flash game ever! Desktop Tower Defense is better, but still marginal. Version 1.5 is just blank after the splash screens, version 1.2 shows the towers, shots, health bars of the creeps and the desktop. version 1.1 you can also see the border of the game area. Playing without a keyboard is painful, so it is only really useful if you need a fix, to tied you over till you get on a real browser next.
See no text, no creeps, hmm where is that sell button…
I then resorted to Googling for Wii Flash games and viewing lots of terrible sites, but did find wiicade.com, and it is setup really nicely for the Wii screen size. The most enjoyable game there was Missile 3D by DX interactive. I liked the faux 3D and hand drawn look.
But there is only so much fun that can be had from a point and click only interface.
I wish the Wii/Opera browser had a Silverlight client, then I could develop and not just complain. Well at least try.