Platinum Together1. Lewis Galoob Toys v. Nintendo
964 F.2d 965 (9th Cir. 1992)
Nintendo lost its appeal challenging Game Genie, an accessory that changed aspects of gameplay using an existing cartridge. The court emphasized the absence of a concrete or permanent modified game output and the accessory's dependence on the original game. This is relevant to temporary, complementary modifications, not blanket permission to distribute a modified game. The decision predates the DMCA.
2. Micro Star v. FormGen
154 F.3d 1107 (9th Cir. 1998)
The court distinguished Game Genie when considering a commercially distributed collection of Duke Nukem levels. Files that directed the game to produce new stories using protected expression could support a derivative-work claim, even though the files did not themselves include the game's artwork. Keeping asset files out of a download is important, but does not decide every copyright issue.
3. Sony Computer Entertainment v. Connectix
203 F.3d 596 (9th Cir. 2000)
The court held that intermediate copying during reverse engineering was fair use on the facts before it. Connectix's final emulator did not contain Sony's copyrighted material. This supports a fact-specific interoperability argument. It does not authorize distributing Sony's BIOS, another company's game code, or every reconstructed implementation.
4. MGM Studios v. Grokster
545 U.S. 913 (2005)
The Supreme Court recognized liability for distributing a product with the objective of promoting infringement, shown through clear expression or affirmative steps. It did not make mere knowledge of possible infringing uses sufficient on its own. Actual conduct and promotion matter. A disclaimer cannot reliably neutralize active encouragement or assistance with infringement.
5. MDY Industries v. Blizzard Entertainment
629 F.3d 928 (9th Cir. 2010), amended opinion February 17, 2011
This dispute involved World of Warcraft automation software and access controls. The Ninth Circuit distinguished contract violations from copyright infringement and addressed separate DMCA liability for circumventing access controls. A favorable copyright argument does not automatically resolve anti-circumvention issues. The scope of an access control and any applicable exception need separate analysis.
6. Berman v. Freedom Financial Network
30 F.4th 849 (9th Cir. 2022)
In the context of the state-law rules considered there, the court required reasonably conspicuous notice and an unambiguous indication of assent when relying on inquiry notice to form an online agreement. A legal page alone is not an acceptance process. Actual notice, the interface, the user's action and the applicable contract law matter.
7. Federal copyright and technical protections
17 U.S.C. § 107 requires a case-specific fair-use analysis, including purpose, the nature of the work, the amount used and market effects. Calling a project a fan mod, distributing it for free, or requiring ownership does not independently establish fair use.
17 U.S.C. § 1201 addresses circumvention and certain circumvention tools or services. Its interoperability provision, § 1201(f), has conditions involving lawful access, an independently created program, necessity and non-infringing conduct. Neither “interoperability” nor a player's purchase is a universal exemption. Specific exceptions must be assessed against the actual conduct and current law.
Contract, trademark, privacy, consumer-protection and state-law obligations can apply separately. U.S. federal law does not eliminate relevant state law or non-waivable protections for users elsewhere.
8. Applying these principles to this project
The intended distribution model is a separately supplied Mod requiring each player to provide their own lawful Original Game copy. The actual release must match that description. Code origin, third-party licenses, reconstructed material, protected expression, technical protections and marketing all need consideration.
The Terms require lawful copies and prohibit using the Services to distribute or locate pirated game data. They do not promise to investigate every purchase, and they do not purport to excuse the operator's own legal duties.
“Contains no copyrighted game material” is a claim about package contents. “Copyright-free” commonly suggests there are no copyright restrictions on the supplied code. Those statements are different: original project contributions can remain copyrighted even when they contain no Nintendo-owned code or assets.
These summaries identify useful authorities and important limits. They are not an exhaustive legal review, a current citator report, an infringement audit, or a guarantee against a claim.