Guía parental

Some sexual undertones with Raynor and Kerrigan.

The game features an almost nonstop amount of blood, although it's not usually graphic.

A few uses of "shit", "Bullshit" here and there and quite a few damns, hell, bastard, some used with "God."

The Firebat is portrayed as a flame loving smoker and many characters throughout the game smoke. There are the "stim packs", which are injections that behave similarly to stimulants and make your units move faster (the characters on which it's used on use remarks like "Yeah, that's the stuff" and "Ahhh...") There is a cinematic in which Marines take beers from a cooler in which a bomb is in before they are ambushed by the Zerg.

A lot of cinematics feature the Zerg and can be considered quite terrifying.