"Underdog" was recorded for Keys' seventh studio album Alicia (2024). Speaking on the meaning behind the song, she told Rolling Stone: I love this song so much because it's about real life and real people and our experiences. We've all been in a place in our lives where we've had to defy the odds.

An underdog is someone who isn't likely to win a competition or contest. When a professional basketball player faces off against a high school student who's a foot shorter, the high schooler is the underdog. Anyone at a disadvantage, whether in general or in a particular situation, can be called an underdog.

As reported by IGN, players with early access to the game's single-player campaign found that the total file size for Call of Duty at installation  which also includes the Modern Warfare II campaign, Warzone, and Call of Duty HQ  now comes in at 234.9GB on PlayStation 5.

To play Call of Duty: World at War you will need a minimum CPU equivalent to an Intel Core 2 Duo E8400. In terms of game file size, you will need at least 8 GB of free disk space available. The minimum memory requirement for Call of Duty: World at War is 1 GB of RAM installed in your computer.