: When played on a 3DS, the game utilizes the system's native DS hardware (TWL mode). It does not feature stereoscopic 3D but benefits from the 3DS's larger, brighter screens.

Technically, the pursuit of these codes highlights the ephemeral nature of "connected" gaming. Chinatown Wars on 3DS utilized the now-defunct Rockstar Social Club integration. While the game cartridge itself contains the core narrative of Huang Lee’s rise through the Triad ranks, the bonus content tied to the QR codes was an early form of DLC that relied on external servers and image hosting. When the search query asks for a "2021 link," it is often a request for a mirrored image—a saved JPEG or PNG hosted on a third-party site like Imgur or a Reddit thread—that still contains the scannable data. The fact that this query persists demonstrates that players are not just looking to play the game; they are looking to experience the complete product, including the meta-game of scanning codes.

Most players looking for "3DS QR codes" are actually searching for CIA QR codes that can be scanned using the FBI homebrew application