Video games have captured the imagination of kids and adults alike over the last few decades, with some leaving a lasting impact on popular culture.
Gaming has certainly come a long way, from arcades and consoles such as the PlayStation and Xbox, to mobile gaming and even virtual reality. And it's big business: the global market is expected to be worth over $113 billion in terms of revenue by 2018, according to research firm Newzoo.
To celebrate the video games that have "significantly affected the video game industry, popular culture, and society in general," The Strong museum, in Rochester, New York, has started a "World Video Game Hall of Fame."
Click ahead to see the six games its expert panel of historians, journalists and professors decided had "enjoyed popularity over a sustained period" – do you agree?
- By CNBC's Arjun Kharpal
Its simple gameplay and black and white animation might be far removed from the sleek graphics of today's titles, but there's no denying Pong is iconic.
Users control a paddle to hit a ball back at their opponent and attempt to score – much like air hockey – and The Strong museum said it "launched the video game industry" after its release in 1972.
The museum notes that it was not the first electronic game -- the Magnavox Odyssey home console already featured a similar tennis game -- but the game's broad appeal propelled it and its maker Atari into the spotlight.
"Decades after its launch, Pong's iconic sound, intuitive controls, and satisfying game play still resonate, inviting people to try their hand at keeping the ball bouncing as long as possible," the museum said.
Pac-Man took a massive bite out of the video games market when it debuted in 1980.
Players control the yellow Pac-Man around a maze to eat food without getting caught by enemies that looked like colorful blobs.
Despite its simple concept, Pac-Man became a "mass cultural phenomenon" and the best-selling arcade video game ever, The Strong museum said.
But the game is also credited with launching the massive video game licensing craze which prevails today – with spin-off products including clothing, toys and TV shows.
"Pac-Man is still such an effective visual icon, an incredibly economical application of the limitations of game visuals in that era, and so attention-grabbing because of it," Steve Bailey, senior games analyst at IHS, told CNBC.
Tetris' ascent began in the Soviet Union in 1984 and quickly spread across eastern Europe.
In 1987, Tetris launched on PCs in North America and Europe and was propelled to gaming legend when it was packaged alongside Nintendo's Game Boy in 1989.
Players had to manoeuvre different shaped blocks into a neat shape – and those lucky enough to reach the end of the game were treated to a cutscene of a rocket taking off to celebrate their victory.
"It was the ideal fit for Nintendo's Game Boy, with which it was bundled, acting as the perfect Trojan Horse for slipping Tetris into the lives of millions of nascent gamers," Bailey said.
Arguably the most recognizable video game character ever, Mario the Italian Plumber has been constantly reinvented.
But the now-iconic Mario had humble beginnings -- the character first appeared as Jumpman in arcade game Donkey Kong. Now, he has featured in more than 200 games and on every Nintendo console ever made.
Together with his brother Luigi, Mario was in a constant battle to defeat the evil Bowser and rescue Princess Peach.
Mario has been credited with not only helping Nintendo, but also saving the broader video game market.
"Mario's infectious, upbeat personality helped reinvigorate the struggling video game market," The Strong museum explained. "Mario himself not only became the face of Nintendo, but also the face of the video game industry as a whole."
Modern gaming owes a lot to DOOM. The first-person shooter format – which frames the game from the point of view of the character who is often holding a weapon – was made famous by this 1993 game.
Not only did it popularize a genre, it also had a big impact on the technical side of game creation.
"(DOOM) helped shape the course of gaming history by introducing the idea of a game 'engine' (separating the game's basic functions from other aspects, such as artwork), encouraging multiplayer interaction," The Strong museum said.
"DOOM was a commercial success, but its most important legacy is the impact that it has had on the form, function, feel, and perception of so many games that followed, such as Half-Life and Halo."
But DOOM's violent gameplay also proved controversial and sparked widespread debate over the link between video games and violence in society during the 1990s.
If your kids are sat in front of their computers for hours on end, chances are they're playing World of Warcraft.
This so-called "massively multiplayer online role-playing game" allows players to create virtual avatars that can explore a constantly-changing fantasy world.
As of February 2015, the game boasted more than 10 million subscribers, down slightly from its 12-million peak in October 2010.
"World of Warcraft brought the scale and imagination of the MMO (massively multiplayer online) experience to a huge audience. When it first launched, it leveraged an art style that permitted players with low-spec PCs to enjoy solid game performance," Bailey said.