10 Best Multiplayer Games (That Aren't Multiplayer Games)
3. Portal & Portal 2
Depending on how much (or little) patience you have when it comes to video games, puzzle games can often be best enjoyed with an audience.
This is especially true of the Portal games, two stories so well written and performed that halting progress because you're stuck can easily cast a shadow over the entire experience. It isn't fun to turn grumpy in the middle of something so enjoyable.
Conversely, playing with friends makes those moments you get stumped even more enjoyable. You'll all be scratching your heads, trying to progress via trial and error, when, inevitably, someone will chime in, "Guys, I've got a crazy idea." And usually that crazy idea is the right idea.
Valve of course realized this themselves when they added an entirely separate co-op campaign to Portal 2. Fortunately, the group fun of the single player wasn't compromised and it proved to be even better than the original.
Not to mention that they're comedies, and like most comedies, are best enjoyed with an audience. You'll laugh harder, form inside jokes, cooperate to solves puzzles, and get high off those sweet, sweet hits of oxytocin.