Being the game that helped thrust the class-based shooter into the spotlight I don't see that many people talk about Team Fortress Classic. Perhaps that's a given considering it's age, but even nowadays it's gameplay is unparalleled by any other modern class-based shooter and is truly a product of it's time (in a good way). The movement is sleek and each class serves their own purpose, and as with any other Valve game the amount of custom content that has been produced for this game over it's 24 years of existing.