Worms: Open Warfare 2 review at Gamespot.

"After spending a few years trying to transition the Worms franchise into 3D, it would seem that Team 17 has come to terms with the fact that its good-humored strategy series is simply more appealing in 2D. Worms: Open Warfare 2 for the DS and PSP does little to tinker with the established formula, but what it does hold over the original Open Warfare is more content.

Worms: Open Warfare 2 seems totally comfortable playing to the audience that's already got a taste for its particular brand of turn-based strategy. This is most apparent in the gameplay, which plays almost identically to any of the 2D Worms games released over the past five years. With a four-pack of worms at your command, you take on up to three other teams of worms, inching your way across a craggy landscape and hurling both conventional and unconventional weapons at one another. Open Warfare 2 raises the number of weapon types to just over 30, bringing back classic munitions like the concrete donkey while introducing a number of new, ridiculous pieces of weaponry like the explosive buffalo of lies. While the worms themselves are the source of much of the game's charm, it's the weapons that make Worms fun, and the arsenal in Open Warfare 2 is solid."

Full Source: Gamespot