Can Left 4 Dead 2 be played alone?

Can Left 4 Dead 2 be played alone? Single Player avatar used in Left 4 Dead 2. Play a single player offline game with computer-controlled teammates. Single Player is a gameplay mode with only one player controlled character. The player assumes control of one of the Survivors, and all the other characters are AI controlled.

Single Player avatar used in Left 4 Dead 2. Play a single player offline game with computer-controlled teammates. Single Player is a gameplay mode with only one player controlled character. The player assumes control of one of the Survivors, and all the other characters are AI controlled.