The phrase "access to additional content" is correct and usable in written English.
You can use it when referring to the ability to obtain or view extra material or information, often in the context of digital media or online platforms.
Example: "Subscribers will have access to additional content, including exclusive videos and articles."
Alternatives: "availability of extra material" or "entry to supplementary content."
There are currently 2,700 registered users, who gain access to additional content on the site through registration.
The system reads the disc and presents a personalized computing environment, complete with application software and access to additional content over the Internet.
Wii consoles that are linked to a broadband Internet connection have even greater access to additional content and channels.
Earlier this month, Songza introduced Club Songza, a paid, ad-free experience that costs $.99 per week and gives users access to additional content.
It's great for kids and beginners alike, and once the free content has been completed, users can get access to additional content through in-app purchases within the game.
As the successor to the BD-HP20U, the BD-HP21U now supports BD-ROM Profile 1.1, allowing users access to additional content from Blu-ray titles, including movie trailers, special subtitles/audio and games.
The iTunes U app provides access to additional course content, including supplemental materials, assignments and exams from several Stanford courses.
Moreover, 1.5 million players have ponied up $49.99 a year for access to additional downloadable online content for the Call of Duty games.
The work presented here constitutes the first stage of this process by proposing a tiered metadata system of knowledge, information and processing where each in turn addresses a) discovery, indexing and citation b) context and access to additional information and c) content access and manipulation.
Users get to see artwork selected by the musicians, access to background notes about the band and music, lyrics and links to additional content online.
Z.-X.L. provided access to additional specimens and data.
