You're going to need to sneak to an EB or GameStop if you want it, though.
DID YOU KNOW? NINTENDO REVEALS ITS DARK SECRET
Aug. 21, 2006 - A new Nintendo DS game is arriving with the stealth befitting a ninja assassin. Tenchu®: Dark Secret, made exclusively for Nintendo DS™ sneaks up on you – then grabs you by the throat. Be on your guard because it launches today.
Keep in mind you can't just find a ninja on any old street corner. Thus, it'll take skill and knowledge to obtain Tenchu: Dark Secret. The game, Rated T for Teen, will be available exclusively at GameStop and EB Games stores nationally.
Princess Shizu is a young woman married to a cruel warlord. After an attempt on her life, you must use your ninja skills to play through 40 missions to protect her and reveal her would-be killers. You can strike with a sword, plant secret grenades and even construct your own weapons.
If you're running low on supplies in your single-player missions, connect to Nintendo® Wi-Fi Connection, Nintendo's wireless gaming service. There you can meet with friends and strangers to buy, sell and trade important items. The only thing more fun than playing as a ninja is fighting another ninja for supremacy. Just meet with another player on a local wireless connection and match wits until one of you reigns supreme.
For more information about Tenchu: Dark Secret, please visit www.nintendo.com.