Changing roms

Take a look in the retro console section of eBay and you'll find old hardware and games going for stupid amounts of money. And for what? Another box in the attic, another plastic slab left in a display case for the rest of time. The games themselves, however, are worth saving: they’re both important waypoints in the ongoing evolution of digital entertainment, and in many cases incredible triumphs in and of themselves. That’s where emulation comes in - playing classic games in their original, or improved, forms, all from the comfort of one PC. No antique peripherals or carefully filed original packing needed - it's all in a folder on your hard drive.

Because emulation involves the PC pretending to be other (often dramatically different) hardware, it’s generally nowhere near as efficient as running a game designed to work in Windows natively. So you’re not going to be playing Xbox 360 games on your Athlon 64 - but older console generations, from the Atari 2600 to the first PlayStation, have such minimal requirements that they’ll barely trouble a modern PC.

There is, however, one huge problem. With a very few exceptions, it’s illegal to play the data ripped from a console game unless you own the original cartridge/disc/tape/arcade machine. Even if you do own it, it’s very much a legal grey area. On the other hand, you don't have to use your emulator for commercial games at all. A number of homebrew games have been made for old platforms, and as making your own SNES cartridge isn’t a viable option, an emulator is the only way to play them.