You want to play Chrono Trigger on your phone. You’ve heard that emulators are illegal. You’ve also heard that it’s fine if you own the cartridge. You’ve heard about the 24-hour rule. You’ve heard that Yuzu getting shut down means all emulation is now illegal.
Most of what you’ve heard is wrong.
I read the actual court cases and copyright law so you don’t have to. Here’s what’s actually true, no myths, no lawyerly hedging, no scare tactics designed to make you feel guilty for playing 30-year-old games.
The Short Answer
Emulators are legal. This was settled in US federal courts in 2000 and hasn’t changed.
ROMs are complicated. Downloading ROMs of games you don’t own is technically copyright infringement. Downloading ROMs of games you do own is a legal grey area.
Switch emulation is a completely different situation from SNES or PS1 emulation. The legal framework that makes retro emulation defensible mostly doesn’t apply to current-gen consoles.
Nobody has ever been sued for personally playing ROMs. Nintendo’s enforcement targets ROM sites, emulator developers, and pirates, not individual players loading up old SNES games.
Now the detail behind each of those points.
Emulators Are Legal: Here’s the Proof
Two cases established this clearly.
Sega v. Accolade (1992): A game company called Accolade wanted to make games for the Sega Genesis. To do that, they had to reverse-engineer Sega’s lockout chip by copying and analyzing its code. Sega sued. The Ninth Circuit ruled that reverse engineering is fair use “where disassembly is the only way to gain access to the ideas and functional elements embodied in a copyrighted computer program.” Sega lost.
Sony Computer Entertainment v. Connectix (2000): Connectix made a PS1 emulator called Virtual Game Station for Mac and Windows. During development, they had to copy and analyze Sony’s BIOS code to understand how the hardware worked. Sony sued. The Ninth Circuit ruled 3-0 that creating an emulator through reverse engineering is legal. The court said the final product “creates a new platform, the personal computer, on which consumers can play games designed for the Sony PlayStation” and that this was “modestly transformative”, fair use.
These cases are still good law. An emulator that was built through clean reverse engineering, without copying protected code into the final product, is legal. Full stop.
The key word is “clean.” An emulator that includes actual Sony or Nintendo proprietary code copied directly into it would be a different situation. Reputable emulators don’t do this. BSNES, Dolphin, PCSX2, RetroArch, these were all built through reverse engineering, not by copying code out of someone’s IP.
The Myths That Won’t Die
“The 24-Hour Rule”
There is no 24-hour rule in US copyright law. There is no 48-hour rule, no “personal use” exception, no provision that lets you download a ROM if you owned the game at some point.
The myth likely comes from the 1990s, when MP3 sites promoted a similar fiction to seem legitimate. It migrated into gaming culture and stuck around because people wanted it to be true.
Section 117 of the Copyright Act does say that the “owner of a copy” of software can make an archival backup of that specific copy for personal use. But courts have interpreted this narrowly, it means you can make a backup of the physical cartridge or disc you own, not download a copy someone else made and posted online.
Nintendo’s own legal FAQ explicitly debunks this myth. Their words, not mine.
“Abandonware is legal”
Abandonware refers to software that’s no longer being sold or supported by its creator. It’s a real phenomenon. It’s not a legal concept.
“Nobody is selling this anymore” doesn’t make it legal to copy and distribute the copyright holder’s work. Copyright on corporate works lasts for 95 years. Almost no video games are in the public domain. A game from 1994 won’t enter the public domain until 2089.
“Yuzu getting shut down proves emulators are now illegal”
Nope. The Yuzu case settled before trial, which means no legal precedent was set. A settlement agreement is a private business deal, it has no binding effect on future cases.
What the Yuzu case actually demonstrated is that Nintendo is extremely aggressive about enforcement against Switch emulator developers specifically. More on that in a minute.
“Old games are public domain”
See “abandonware.” Almost no video games are in the public domain. Copyright law in the US was extended significantly by the Sonny Bono Copyright Term Extension Act in 1998. Games from the Atari 2600 era (late 1970s) are starting to approach the threshold. Games from the NES era onward won’t be public domain for decades.
Why Switch Emulation Is a Completely Different Legal Situation
Here’s the part that most explainers get wrong or skip.
The reason retro emulation is on relatively solid legal ground is that the consoles being emulated had minimal or no DRM (copy protection). The SNES used a lockout chip, but by 2000, the established legal principle was that reverse-engineering to create a compatible product is fair use. There’s no additional legal violation involved in running a SNES emulator.
Modern consoles, Nintendo Switch, PS5, Xbox Series X, use encryption. Every game is encrypted. Every legitimate copy has a cryptographic key. Breaking that encryption to run a game on an emulator violates DMCA Section 1201, which makes it illegal to “circumvent a technological protection measure” regardless of whether you’re infringing copyright.
Section 1201 is a separate violation from copyright infringement. You can be sued under Section 1201 even if you own the game. The question isn’t “did you copy someone’s creative work”, it’s “did you break our encryption.” That’s why Nintendo’s legal argument against Yuzu wasn’t primarily about copyright. It was about DMCA circumvention.
The criminal penalties for willful commercial circumvention under Section 1201 are up to 5 years in prison and $500,000 in fines for a first offense.
This is why Yuzu and Ryujinx are in a different category than Dolphin (GameCube/Wii emulator) or PCSX2 (PS2 emulator). Those older consoles didn’t have encryption in the modern DMCA sense. Switch does.
The 2024 Crackdown: What Actually Happened
Yuzu: Nintendo of America v. Tropic Haze LLC, filed February 26, 2024. Settled March 4, 2024. The settlement required the developers to pay $2.4 million, hand over the yuzu-emu.org domain, destroy all copies of Yuzu and Citra (their 3DS emulator), and cease all development. No trial. No precedent. The developers gave up rather than fight what would have been a multi-year legal battle they’d likely lose.
Within hours, dozens of community forks appeared. Nintendo DMCA’d 8,353 GitHub forks on April 29, 2024. Enforcement became a whack-a-mole.
Ryujinx: On October 1, 2024, the lead developer posted that Nintendo had contacted them and offered “an agreement to stop working on the project.” They shut down voluntarily the same day. The GitHub repos went down immediately. Nintendo acquired the Ryujinx domain by November. No lawsuit was filed, it was a private arrangement, likely involving payment or at minimum a credible threat that the developer chose not to test.
The pattern is clear: Nintendo is specifically targeting Switch emulation, because Switch is a current product generating current revenue. Their enforcement history for retro emulation is almost nonexistent at the developer level and completely nonexistent at the individual user level.
Nintendo’s Actual Enforcement Record
For context on who Nintendo actually sues:
- LoveROMs and LoveRetro: ROM distribution sites with 17 million monthly visitors. Settlement: $12.23 million (2018).
- RomUniverse: ROM distribution site. Judgment: $2.115 million (2021).
- Yuzu: Switch emulator developer. Settlement: $2.4 million (2024).
- ModdedHardware and r/SwitchPirates: Switch hacking community. Settlement: $2 million (2025).
- FBI involvement: Seized 7 piracy websites in July 2025, documented 3.2 million downloads and $170 million in estimated losses.
Notice what’s not on that list: anyone who downloaded a SNES ROM to play on their phone. Nintendo has never sued an individual for personal use of retro emulation. They have no economic incentive to do so, the PR cost would be catastrophic, and the financial recovery minimal.
That’s not a legal protection. It’s a practical reality.
What This Actually Means For You
If you’re thinking about running a SNES, N64, PS1, or PS2 emulator with games from those systems:
You’re in legally grey territory (the ROM itself is copyrighted), but the enforcement risk to individual personal users is essentially zero based on all available evidence. The emulator software itself is legal. Courts have said so. Nintendo’s enforcement focuses on ROM sites and developer tools, not players.
If you’re thinking about running a Switch emulator:
That’s a different situation. DMCA Section 1201 creates a legitimate legal exposure that doesn’t exist with retro emulation. Nintendo is actively targeting the ecosystem. The developers got shut down. This is still largely a practical rather than theoretical risk for individual users, but it’s a real legal exposure in a way retro emulation isn’t.
The clearest, cleanest path: use the legal options that exist. Nintendo Switch Online Expansion Pack gives you NES through GameCube access for $49.99 a year. PlayStation Plus Premium has PS1 and PS2 classics. GOG has the PC side covered.
For the 87% of classic games that aren’t available anywhere legally, the practical reality is that most people in the retro gaming hobby use some form of emulation. I’m not going to tell you what to do with that information. I’m just not going to pretend it doesn’t exist.
Have a specific emulation legality question I didn’t cover? Drop it in the comments.
About the Author: Fred is one half of Two Average Gamers, a community-focused gaming site dedicated to helping regular folks enjoy gaming without the toxicity. He is not a lawyer. Nothing in this article is legal advice. Consult an actual attorney before making any decisions based on copyright law, obviously.
More from the Retro Gaming Guide
This article is part of our Retro Gaming Guide, the complete guide to playing classic games legally in 2026.
- Are Emulators Legal? Everything You Need to Know in 2026
- 25 ’90s Games That Hold Up Perfectly Today
- The Games That Defined Our Childhood
- Game Preservation Matters: Why Classic Games Are Disappearing
Also from TAG: The Busy Gamer’s Survival Guide | The Ultimate Couch Co-Op Guide | Which Handheld Should You Buy in 2026?
