What is a CD-RW drive mainly used for?

A CD-RW (Compact Disc Rewritable) drive is primarily used for saving data to a compact disc. This type of drive allows users to write information to a CD that can later be erased and rewritten multiple times. This versatility makes it particularly useful for tasks such as creating backups, transferring files, or even making temporary storage solutions, as users can continuously modify the data stored on a CD-RW.

The capability to save and rewrite data sets CD-RW drives apart from other storage media, such as CD-R drives, which can only record data once, making them unchangeable. In the context of the other options, while playing video games and accessing internet files are certainly functions common to many computing devices, they are not primary uses of a CD-RW drive. Additionally, while a CD-RW can technically store unchangeable data once written and finalized, its main strength lies in its rewritable feature, which aligns with saving data.