Not only easily the best TimeSplitters to date, but also one of the best shooters on the XBox.
TimeSplitters 3 is easily the best of the three games for one reason: It's gone mainstream. While the other two TimeSplitters' were sort of 'love em or hate em' games that only appealed to a certain audience, Free Radical have made the game accessible to anybody. This is mainly through its inclusion of a proper story mode and an online mode, but its exemplified by the switch of publishers from Eidos to EA Games.
Multiplayer-wise, this is among the best offline shooting fun you're going to get out of your console. With over 120 characters, a wide array of weapons, custom-made levels, bots and a superb frame-rate, it's one if, if not the most faced-paced, frantic and frenetic shooter ever. Online, however it's not quite as legendary. Sure, it's fun but with games like Far Cry: Instincts and, of course, Halo 2 on the system, there's more fun to be had online there.
Still, the gameplay is timeless. If you liked Goldeneye and Perfect Dark, you'll be right at home here. It's a superb throwback. The diversity of weapons, the numerous challenges and leagues, the great sense of humour and the amazing realisation of the settings from the past, present and future are still the shining stars in the series, and this TimeSplitters is easily the best game to hold the name.
While I still hope for a TimeSplitters 4 and PSP/DS versions of that game, I still find it difficult to see how Free Radical can significantly improve on a game like this...