Emulation

[Justin Bieber]

The endeavor to equal or to excel another in qualities
or actions; an assiduous striving to equal or excel another; rivalry.

[Agnes]

The term emulation comes from the verb emulate, which means to imitate or reproduce. Therefore, computer emulation is when one system imitates or reproduces another system. This can be done using hardware, software, or a combination of the two. However, since hardware is expensive to reproduce, most emulation is done via software.
One of the most common types of software emulation involves running different operating systems in a virtual environment. For example, programs like Parallels Desktop, VMware, and Apples Boot Camp allow Windows and other operating systems to run on an Intel-based Macintosh computer. Sun Microsystems xVM VirtualBox allows multiple operating systems to be run on Windows, Mac, and Unix platforms. These applications are collectively referred to as software emulators, since they emulate different computer systems.
Another popular type of software emulation allows console video games, such as Nintendo, Sega, and PlayStation games, to be run on a PC. The program ZSNES, for example, allows Super Nintendo (SNES) games to be played on a Windows or Unix machine. The Virtual Boy Advance emulator allows users to play Game Boy Advance games on Windows or Macintosh computers. Games for these emulators are saved as ROM files, which are exact copies of a game cartridge or disk. Therefore, instead loading a physical cartridge, video game emulators simply load ROM files from the computers hard drive.
A third type of emulation uses a type of file called a disk image. While ROM files are used to emulate game cartridges, disk images can be used to emulate optical media and physical hard disk. For example, an .ISO file (Windows) or .DMG file (Mac) can be mounted on the desktop, which makes the operating system view the file as a physical disk. This provides an easy way to make exact copies of CDs, DVDs, and hard disks. Disk images are also commonly used to create virtual installer disks that cant be modified by the user.

[Sarah]

A hardware that permits PCs to mimic gaming console systems for games to be played on. There are many reasons for [emulation]. Firstly, it is worth investing in emulation to combat against greedy gaming publishers, who want to [scam people] with micro-transactions, overpriced retro and modern games, DLC, seasonal passes, [pre-order] bonuses, lack of content, etc. Secondly, gamers pirate games online because they are either poor or games are becoming too expensive in the market, similar to rip-off textbooks that costs about 1000 bucks in American universities and a lot of college students pirate textbooks for free in PDF form to reduce [student debt]. [Thirdly], gaming publishers get careless when they throw away the gaming source code like what they did with the first 3 Crash games and they will only put a handful of retro games on their consoles to prevent gamers from playing any chosen games. To conclude this, emulation makes the gaming world less garbage, to cut down on runaway capitalism, to maintain creativity, and to cut down on corporate slavery.

[Vania]

Effort to match or surpass a person or achievement, typically by imitation.

[Gregory]

the process of copying something achieved by someone else and trying to do it as well as they have: