I've played every new Total War game, practically on the day they've come out, and I have to say that Rome:TW really does bear up when revisited.
I picked up this bundle (which includes the original game and two expansion packs) on a whim, what with my original discs long lost. Even though the graphics don't inspire the same awe as they used to, this game is phenomenally good fun. It arguably still has the most accessible gameplay from the whole series, and the little historical details and the sense of period are very strong: the game can be genuinely educational even as you reshape history.
The main campaign mode, where you take one of Rome's great houses out into the Mediterranean world and then turn back to claim the title of emperor, is more finely balanced and exciting than in any other long-term game of this sort, perfectly balancing structure with free-form gameplay.
The AI, which has been an ongoing issue in the TW series, is at its peak here. On 'hard', the campaign map AI will be suitably aggressive.
Small problems were ironed out in the next episode - Medieval 2: Total War - such as the fact that actual combat can be over very quickly in this game, with morale playing perhaps too important a role. But this is nit-picking. Rome: Total War is years old now, but remains an eminently playable strategy game.