Contra 4 review at Gamer 2.0.

"November 30,2007 - When it comes to arcade-style classics, Contra ranks incredibly high on that list. There aren't too many games that feature the sheer challenge that this non-stop shoot-em-up series definitely possesses. The series has been making gamers throw their controllers at their television sets for over 20 years now. To celebrate this frustration, Konami has released Contra 4 on the Nintendo DS, and it's every bit as satisfying as it is challenging."

Full Source: Gamer 2.0