You'll actually do more harm leaving it plugged in all the time. Just like with laptops, if you plug it in when the battery is full, the overall lifespan of the battery will degrade, though over time. That's exactly what i've done with my current laptop, which is just over 2 years old, and if it's ever unplugged the battery life is a mear 10 minutes. It used to be 2 and a half hours, but its matters not as the thing never leaves my room anyway.

I wouldn't worry too much about your DS though. I still have the original fat DS, a Japanese one, which I play often, and it's battery life is still around 5-6 hours. So it's only lost a few hours in 4 years, and I can still charge it over night or whilst im playing if need be.

[QUOTE="Raiko101"]If it's secret, I suspect it'll be something other than an Excite Truck game. I just don't see the point in keeping the sequel a secret.Super-Mario-Fan

I agree. Due to the secrecy and the development time (remember, Excite Truck was released over 2 years ago), I'm thinking that they are making something bigger. A new F-Zero perhaps? We'll find out soon, that's for sure. :P