The Orange box is a compilation, so it shoud be reviewed as a compilation. That is why I'm reviewing each game separetly.
Half-Life 2
The original Half-Life was one of the great pioneers of modern shooters. It helped the then little Valve become the giant it is today. So when 6 years later, people found out that the lauded dev was putting out a sequel, they listened. And they were rewarded with one of the most immersive, atmospheric, and overall amazing FPS's of the generation. The graphics are amazing, with realistic physics and lifelike facial animation, all thanks to the then new Source engine.(and if that's still not good enough for you, there's a few good graphical boost mods out there) The gameplay manages to constantly feel fresh, with the occasional vehicle level, and even a scary, suspenseful stage here and there. The shooting feels perfect, and the controls are well mapped out. The protagonist Gordon Freeman never speaks or appears onscreen, yet still feels like a colorful character. Yeah. That's how awesome Valve is.
Individual Rating: 10/10
Half-Life:Episode One
In Ep 1, the story picks right up where the original ended, and it continues to make a great series even better. The graphics are improved, and the atmospheric sense is even more pronounced in this one. The game is a little on the short side, though. At a little over 6 hours long, you'll wonder why Valve released this as a full game as opposed to an expansion. While it lasts though, you'll appreciate Valve as not just game devs, but artists.
Individual Rating: 9/10
Half-Life: Episode Two
Once again, Ep 2 picks up where the previous one left, and it once again amazes, this game is pretty dark compared to the bright open environments of previous instalments. The biggest step forward is in graphics, with better rendered environments and even more lifelike facial animation. You have a partner with you most of the time, and the fun of her picking a lock while you cover her is a good new mechanic. Once again, the episode is a bit short, but it's a great game nonetheless.
Individual Rating:9/10
Portal
Appearing for the first time in this compilaton, Portal invented a new genre. And this First-Person puzzler is one that will be remembered. In the game, you use your "Portal gun" to shoot portals onto barriers of any kind to get to the end of each stage. This starts out simple and easy, which is just enough to suck you in. Then the puzzles get more and more devilish, which can be frustrating, but that moment of pride after figuring out that seemingly impossible puzzle is something few games can accomplish. But it's only a couple hours long, and even less if you're a genius and can dash through the stages. Also, the robotic villain GlaDos is hilariously creepy. Often poking fun at science labs and companies in general. The short but fun Portal is going to be an inspiration for many future games.
Individual Rating:9.5/10
Team Fortress 2
Valve's first forray into the world of multiplayer shooters that was Team Fortress was pretty good. Now they have a sequel. It's one of the most simply fun multiplayer shooters ever. You can choose from the same eight classes as the original, and the same weapons as the original.(except for grenades, but that's a good thing) And the mechanics are the same, with Deathmatch, Capture the Flag, and a few others. everyting else though, is completly different. The most striking change is the art style. The original featured realistic shading and proportions. The new one has very cartoony visuals, but don't expect that to get in the way of tye gameplay. I actually prefered it this way. The matchups are excellent, and the shooting feels pristine. Saying TF2 is great is an understatement.
Individual Rating:9.5/10