A new challenge with DTD, try playing it via the Wii browser It's a little painful. The Opera browser, even the recently updated one, doesn't display the game correctly, so I was able to play it, but I couldn't see:

-the creeps (could see their health bars, though)
-how much money or points I had
-the range of my towers
-the sell button
-the left third of the map

That was all livable, though. The real challenge was not having keyboard shortcuts, so I couldn't use the shift key, which was painful.

Easy mode was still fairly...easy.