If you finished Metroid Prime and were left wanting more, this is the game you want. Metroid Prime 2: Echoes features a lot more action, is much more story driven, has better graphics and sound, and the game is a lot harder than its predecessor was. Even if you do get by the game's sheer challenge, it'll take about 20 or so hours to even get to the end, and of course, it'll take much longer if you strive to get that 100% completion percentage'pretty much what all the Metroid 'pros' try to do, and they try to do it at a record time too, but either way'the game has a much harder difficulty and some new goodies to unlock as well. Despite how much better this game may be compared to its predecessor, if you didn't like Prime's pacing and consistent backtracking, you'll probably want to continue to stray farther and farther away from this title. This game, once again, is pure Metroid'considering its past greatness, that is really all there is you need to know if you want this game or not.