The US finally sees the REAL Super Mario Bros 2! Hard, but worth it.
Now, that day has at last arrived. The game is essentially Super Mario Bros on crack. Be warned, it's much harder. Remember the original Super Mario Bros, where the staircases became single blocks suspended in midair towards the end of the game? Super Mario Bros 2 STARTS at that difficulty level. They also added gusts of wind which can help or hinder you, depending on which direction they come from (gusts of wind are strong enough to move Mario even while standing still, and can either make your jumps longer or shorter). My personal favorite addition is the poison mushroom (eating it is equivalent to getting hit by an enemy), which isn't that big of a threat, but still provides a nice twist to things.
In the end, whether this game is worth the $6 to you depends on whether you can stomach a game which will probably spend a lot of time kicking your ass (then again, all Mario games do that to an extent). It's fun, that's for sure... but sometimes, after cheap death #15264, it can be frustrating. Whatever you do, don't listen to the Gamespot review, which knocks the game for being "essentially a level hack". It's a Mario game, what more can you expect?