Team Fortress 2
Teamwork is important, classes must work together to be effective.
Proper class balance is essential
Some class pairings work better than others.
No matter how popular a choice they may be.
Remember, some classes work better at long ranges than others
It's always important to be aware of your surroundings, especially during snack time.
Beware, your allies may not be who they seem.
Valve has considered adding female versions of the classes. The idea has merit.