ROMs, BIOSes, and Legality: The Full Breakdown

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Laws vary by country. When in doubt, consult a legal professional.

The legal landscape of ROM emulation is complex and frequently misunderstood. Here's a grounded, factual breakdown.

What Are ROMs?

A ROM (Read-Only Memory) is a digital copy of a game's data originally stored on a physical cartridge or disc. When you copy or download a game file, you're working with a ROM.

Is Emulation Legal?

Short answer: Yes, in most countries, the emulator software itself is legal.

Emulators do not contain any proprietary game code. They are independently developed software that mimics a console's hardware behavior. Courts in the US (Sega v. Accolade, Sony v. Connectix) have repeatedly upheld the legality of running emulators.

Are ROMs Legal?

This is where it gets complicated.

If You Own the Physical Game

In many jurisdictions, creating a personal backup copy of a game you own for your own use has been considered acceptable under "fair use" principles. However, this has never been definitively ruled on at the level of ROM files.

If You Download ROMs You Don't Own

This is copyright infringement. Downloading a ROM of a game you don't own is legally equivalent to downloading a pirated movie. Copyright terms for most commercial games extend 70+ years past the author's death.

Abandoned Games ("Abandonware")

There is no legal "abandonware" status in most countries. If a game's copyright has not expired, it is still protected — even if the publisher has shut down.

BIOSes: A Special Case

Console BIOS files (e.g., the PS1's SCPH-1001.bin) are copyrighted firmware. Distributing them is illegal. The legal way to obtain a BIOS is to dump it from hardware you own using tools like ps1-bios-dumper.

The Practical Reality

The retro emulation community operates in a legal gray area that game publishers have historically tolerated. Nintendo is the notable exception, aggressively pursuing ROM sites. Most other publishers focus their legal efforts on active commercial piracy, not individual collectors.

How to Build a Library You Own

The cleanest path is also the most satisfying. Buy the games and dump them yourself. It takes a little effort up front, but you end up with a collection that is genuinely yours.

• Cartridge systems. A USB cartridge dumper reads the data straight off a game you own. They are inexpensive and work for most retro consoles.
• Disc systems. A standard computer disc drive can read a CD-based game you own, like a PS1 or Sega Saturn title.
• Modern digital storefronts. Plenty of classics are sold legally today. GOG, the Nintendo eShop, Steam, and publisher collections from Capcom, SNK, and others put the games one click away.
• Official compilations. Boxed collections like the various Castlevania, Mega Man, and Final Fantasy anthologies are a great way to own the originals on current hardware.

Why Game Preservation Matters

A huge share of gaming history exists only on aging cartridges and discs. Cartridge batteries die, discs rot, and original hardware fails. When a publisher stops selling a title, there is often no legal way left to buy it at all.

This is the core reason the preservation community cares so much. Emulation keeps these games playable and studied long after the original hardware is gone. Museums, libraries, and archivists rely on the same tools that hobbyists use. The goal is not to avoid paying for games. It is to make sure the games survive.

We frame everything on Held Games around this idea. Play the games you already own, support the publishers who keep classics in print, and treat your collection as something worth preserving.

Common Questions

Can I download a game I already own a copy of? Legally, owning a copy does not automatically grant the right to download someone else's. The clean route is to dump your own copy.

What about games that are impossible to buy? There is still no legal "abandonware" status for in-copyright games. The ethical case for preservation is strong, but the law has not caught up.

Is sharing my own dumped files okay? Distributing copyrighted ROMs or BIOS files is infringement, even if you own the original. Keep your dumps for personal use.

What We Recommend

• Own the physical games you emulate where possible
• Use legitimately dumped BIOSes from hardware you own
• Support publishers who sell retro games digitally (GOG, Nintendo eShop Virtual Console, Capcom Arcade collections, etc.)
• Treat emulation as a preservation tool, not a shortcut around buying games