Console(s): Sega Genesis

If you meet someone who has a Sega Genesis and they don't have NBA Jam, then just walk away, slowly. Clearly they're missing something that just about everyone in the world should understand. NBA Jam is of the most definitive competitive experiences in sports gaming, and was right up there with Sonic in terms of essential Genesis titles. When you're in need of a short gaming break between classes, NBA Jam will tide you over nicely.