The inclusion of "r link" suggests a user looking for community-driven resources, specifically on Reddit (e.g., r/SwitchPirates or r/SwitchNSPs). While these communities discuss game preservation and modding, they are strictly regulated regarding piracy rules (Rule 1 in most subs forbids linking to pirated content directly).
While Batman: Return to Arkham (containing remasters of Arkham Asylum and Arkham City ) was released for the Switch in late 2023 as part of the "Arkham Trilogy," Arkham Knight was notably delayed. The sheer size and graphical fidelity of Arkham Knight (originally a PS4/Xbox One title) have made porting it to the Switch's mobile hardware a significant challenge for developers.
Downloading Batman: Arkham Knight or any Nintendo Switch game as a "free NSP" from unofficial links is illegal and carries significant risks to your device and personal data. 🛑 Risks of Unofficial Downloads Malware & Viruses
: Links offering free downloads, especially those labeled "NSP free download" or similar, are often associated with piracy or malware. NSP files are related to Nintendo Switch game files, and downloading them from unofficial sources is not recommended.