"The orange box" includes 5 amazing games. It's the best way to spend 20$.
1. Half-Life 2
2. Half-Life 2 Episode One
3. Half-Life 2 Episode Two
4. Portal
5. Team Fortress 2
All of those games are very fun to play. The Half-Life 2 games are shooters which are very entertaining and have some awesome level design (although it's mostly linear). They will require you to "think" a bit in some areas for puzzle solving but most of the game is pure action. You'll fight your way into caves, walk on a bridge's foundations and stop the headcrabs to invade the planet.
Portal is an one-of-a-kind game that lets you solve logic puzzles in the first person view. It's a game that can be enjoyed by anybody liking logic games (or adventure games). It really is fun to play and very immersive.
Team Fortress 2 is a multiplayer game but I don't really care much about it. Go see the other reviews if you're interested.
The stories in the single player campaigns are well told, although the plot isn't a very important part in this game. Also, there isn't any cutscenes where you don't see the action from the main character's eye. Basically: you can move around in the cinematics.
As I said, the gameplay is great and the game is well programmed: you'll be satistifed if you have a computer with a graphic card of at least 128mb and a good processor.
Conclusion: This package includes some amazing games that I liked very much to play. You'll fight your way through City 17, Ravenhold which is a city with zombies, Route Canal driving a weird boat and moving in the foundations of an huge bridge watching the water 400 meters below. Overall, this is the best bang for your buck and you won't be disapointed at all by this game.
This is amazing, go get this game NOW, do not wait!
*You'll need an internet connection in order to install and play the game.