About.com's only real complaint about Halo 3 is that 12-year-olds play it. They gave it five out of five stars in their Halo 3 review.
Calling it the best Halo game yet, Australia's Herald Sun gave Halo 3 a rating of 4.5 out of 5 points.
Geek.com finishes off their review of Halo 3; it's got separate sections on campaign, forge, and multiplayer.
Halo 3's strength is in its multiplayer, they say:
If you're looking for an outstanding, unstoppable multi-player FPS, then Halo 3 is the game for you. Gears of War has a large and dedicated multi-player fan base and it looks fabulous, but the controls are not intuitive and so it's not pick-up-and-play easy like Halo is. Sure, the bumper and X buttons might throw people off for a little while, but Halo set the standard for where FPS gameplay was going, and H3 continues that legacy.
They rate it just short of a "Geek pick" because they ascribe much of the interest in the game as nostalgia for the original Halo.
Gamestyle gives Halo 3 a perfect score, but that doesn't mean it's a perfect game:
The craftsmanship here is astounding, but unfortunately the game is not perfect, as there are a couple of shortfalls. The first is the game's storyline, which throws players in at the deep-end and requires prior knowledge in order to fully appreciate it. This isn't a problem for fans, but anyone else who wants to enjoy the game will be wondering what is going on.
Call me crazy, guys, but it is a sequel. There were two other games. Expecting to know exactly what's going on in Halo 3 without having either played the other two, or at least done a bit of reading, is like expecting to walk into a showing of The Two Towers and know exactly what's going on without having seen the first two films. It's nuts.