Deservedly known as the best ever deal in gaming, The Orange Box contained five games in its generous package. The collection was made up of Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Portal, and Team Fortress 2. Every single one of the games in the collection were modern masterpieces in some way. Half-Life 2 and its two episodes barely need explanation, but they offer some of the greatest single-player FPS action of all time. Similarly, Team Fortress 2, despite the PC version being vastly superior, is one of the most celebrated online shooters of the last decade. The greatest revelation of The Orange Box though, was Portal. The hilarious GLaDOS, revolutionary game mechanics and brilliant puzzles all came together to create one of the most surprisingly brilliant video game experiences ever.