Every emulation guide on the internet has a disclaimer, and almost none of them mean it. This doc is the disclaimer, expanded to full length and meant sincerely — because the legal landscape around emulation is genuinely interesting, widely misunderstood, and the difference between the legal path and the illegal one is smaller than most people think. The usual caveat applies for real: we're a homelab, not a law firm, and laws differ by country. This is the U.S.-centric lay of the land.
The emulators themselves: legal, and it's settled
Start with the good news. Writing and using an emulator is legal in the United States, and this isn't a gray area — it's case law. In Sony v. Connectix (2000), Sony sued the makers of a commercial PlayStation emulator and lost: the Ninth Circuit held that reverse-engineering the PlayStation to build a compatible machine in software was fair use. Sony v. Bleem went the same way the same year. Both built on Sega v. Accolade (1992), the case that established reverse-engineering for compatibility as protected. An emulator is a new, original program that behaves like a console; behaving like something isn't infringement.
That's why RetroArch, Dolphin, PCSX2, and DuckStation develop in the open on GitHub with real names attached. The software is not the problem.
The games: copyrighted, almost all of them, still
Here's where the internet's collective wishful thinking kicks in. Video games are copyrighted works, and corporate copyrights in the U.S. run about 95 years. Nothing from the console era has expired. Every commercial game you've ever heard of is still under copyright — the 1977 Atari launch titles included.
Some beliefs worth retiring, honestly:
- "Abandonware" is not a legal category. Out of print is not out of copyright. A game nobody sells can still be infringed; unavailability is not a license.
- "It's legal to download a ROM if you own the cartridge" is folklore. No U.S. statute or ruling establishes that owning a copy entitles you to download someone else's copy. The defensible version of format-shifting is making the copy yourself, from your own original — not acquiring a stranger's rip because you could theoretically have made your own.
- "Nintendo doesn't care about old games" — the company that pursued ROM sites into nine-figure judgments and reached a multi-million-dollar settlement with the Yuzu emulator's developers in 2024 would like a word. (Note what happened there, though: Yuzu was targeted over a current console and how the project was run — not for emulating retro hardware. Emulator users have never been the ones in court. That's a fact about enforcement, not a statement that unlicensed downloads are fine.)
The legal path: dump your own
The clean route — the one this site is built around — is playing copies you made from originals you own.
Cartridges are the best case. A cartridge is just a circuit board with chips on it, unencrypted, and reading data you own off hardware you own breaks no locks. Affordable USB cart dumpers exist for essentially every cartridge system, and many also back up your original save files — which, for a 30-year-old battery-backed save, is genuinely urgent preservation. This is as legally comfortable as emulation gets.
Early CD consoles are nearly as easy: PlayStation and Sega CD discs are ordinary optical media with no encryption, readable by any PC drive.
Later encrypted discs are where the one honest wrinkle lives. GameCube, Wii, PS2 and onward use encryption or bespoke formats, and the DMCA's anti-circumvention rules (§1201) prohibit bypassing access controls — with no explicit personal-backup exception. Making a personal rip of a disc you own is broadly tolerated, arguably fair in spirit, practiced by millions… and technically unresolved in U.S. law. We won't pretend otherwise, and won't pretend it's scarier than it is either: no one has ever been pursued for ripping their own shelf. Know your own country's rules and your own comfort level.
BIOS files follow the same logic as games. Console firmware is copyrighted code; downloading it is infringement, but tools exist to dump the BIOS from your own console for most systems that need one. Better yet, many modern emulators ship high-level reimplementations and need no BIOS at all — our emulator internals doc explains how that trick works.
What's unambiguously fine
- Homebrew — new games written for old consoles by their authors, released freely (a genuinely thriving scene; new Game Boy and Genesis titles ship every year)
- Games explicitly released as freeware by their rights holders over the years
- Public-domain and openly licensed software
- Your own dumps of your own cartridges and unencrypted discs
- Buying re-releases — a surprising amount of the retro catalog is legally purchasable today on modern platforms, and buying it is the one action on this list that also tells publishers the back catalog is worth keeping alive
Where BreadLab stands
We play what we own. The library here spans the Atari 2600 through the PS3 because the shelves span it — and the point of this doc is that the legal path isn't a grudging compromise; it's most of the hobby. Dumping your own collection gets you preservation-grade backups, your own save files rescued from dying batteries, and a library you never have to feel weird about. This site doesn't link ROM downloads and never will, and that's not a legal formality — a hobby this good doesn't need the shortcut.
Again, and sincerely: not lawyers. If it matters, ask one licensed where you live.