Whether or not Prince of Persia: Epilogue is worth your ten bucks will depend entirely upon what you're wanting from the franchise at this point. If you are either hoping for or tolerant of a darker, more hopeless theme, praying for a game that wears its challenge like a badge of honor, and you still have a copy of the game around, the expansion is pretty much going to be your cup of tea. Everyone else will probably get enough entertainment out of the game to justify the ten dollars, but not enough to feel it was WORTH it; the story is uninteresting and uninspiring, the increased challenge is done in ways that frustrate the player as often as they challenge them, and the experience is underwhelming and flat in most respects. It's still playable, and there's still fun to be had, but if you still have the game lying around, you're probably better off just playing it over again, and if you don't, well, an expansion pack isn't going to mean much, all in all.
