There's a peculiar tension at the heart of Quake. Something's not quite right. For this reason it's a game that sits apart from id's other efforts while at the same time still being fundamental to the overall Brown Corridor heritage of the shooter genre.

It was a game that did so very much to evolve and define the FPS, and yet it does not fit so easily into the conventions that the Texan Doom-makers' other games wallow in. This tension is what makes it one of the developer's most interesting games.

Like all the shooting games whose existence has spilled from the number-fuelled mind of John Carmack, Quake's primary contribution to the history of games was technical. The 3D engine was a significant development atop what was prevalent at the time, and it introduced the minor revolution of "mouse-look" - that is free all-axes viewing using the mouse - to the majority of 1996's shooter players.

Up until that time gamers had been playing along flat axes, usually with "faked" height. But Quake made things truly three-dimensional, and this meant two things: levels which didn't have to shirk vertical complexity and, well, you could perform rocket jumps.

id Software wizard John Carmack has recounted the experience of creating Quake, the seminal first-person shooter that turns 15 today.

"My defining memory of the game was fairly early in development, when I no-clipped up into a ceiling corner and looked down as a Shambler walked through the world with its feet firmly planted on the ground," Carmack, who is knee deep in Rage development, said on the Bethblog.

"This looked like nothing I had ever seen before; it really did seem like I had a window into another world. Of course, as soon as he had to turn, the feet started to slide around because we didn’t have pivot points and individual joint modifications back then, but it was still pretty magical.

"It seems silly now, but at the time we were very concerned that people wouldn't be able to deal with free look mouse control, and we had lots of options to restrict pitch changes and auto-centre when you started moving."

Carmack goes on to describe the game's online play as "almost an accident". He has kind words for its 3D graphics and modding, however.

"The most important thing about Quake for me was that I met my wife when she organized the first all-female Quake tournament. She still thinks Quake was the seminal achievement of id, and she glowers at me whenever I bemoan how random the design was."

At E3 Carmack outlined his vision of the next Quake game - what would perhaps be Quake V - in an interview with Eurogamer.

"Nothing is scheduled here, people are not building this," Carmack said. "We went from the Quake 2 and the Quake 4 Strogg universe. We are at least tossing around the possibilities of going back to the bizarre, mixed up Cthulhu-ish Quake 1 world and rebooting that direction.

"We think that would be a more interesting direction than doing more Strogg stuff after Quake 4.

"We certainly have strong factions internally that want to go do this.

"But we could do something pretty grand like that, that still tweaks the memory right in all of those ways, but is actually cohesive and plays with all of the strengths of the level we're at right now."

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id Software's John Carmack has outlined his vision for the next game in the Quake series.

While confirming that the next Quake is not in development, Carmack told Eurogamer there are "strong factions" within the US developer that want to create another game in the seminal first-person shooter series.

And discussions are pointing towards going back to the first game's quirky roots.

"Nothing is scheduled here, people are not building this," Carmack said.

"We went from the Quake 2 and the Quake 4 Strogg universe. We are at least tossing around the possibilities of going back to the bizarre, mixed up Cthulhu-ish Quake 1 world and rebooting that direction.

"We think that would be a more interesting direction than doing more Strogg stuff after Quake 4.

"We certainly have strong factions internally that want to go do this.

"But we could do something pretty grand like that, that still tweaks the memory right in all of those ways, but is actually cohesive and plays with all of the strengths of the level we're at right now."

Quake began life on PC in 1996. It involved a marine travelling through alternate dimensions to prevent an alien invasion. Quake 2 followed a year later, introducing the alien planet Stroggos. 2005's Quake 4 continued the story.

The first Quake is credited with pioneering online FPS gaming, but Carmack believes it benefits from rose-tinted nostalgia goggles.

"The way I think about some of those things, and I actually get into arguments with my wife about this, who loved the original Quake game, I looked at the original Quake as this random thing, because we really didn't have our act together very well.

"But because it was so seminal about the 3D world and the internet gaming, it's imprinted on so many people. It made such an impact in so many ways. Memory cuts us a lot of slack."

Adding his thoughts into the mix, id CEO Todd Hollenshead said: "People shouldn't worry that we're ever going to orphan or abandon Quake. We are huge fans of the game internally."

id Software's next game is Rage, due out on PC, PlayStation 3 and Xbox 360 this October. Doom 4 follows. After that, who knows?

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John Romero, legendary designer of seminal first-person shooters Wolfenstein 3D, Doom and Quake, is turning his attention to a new type of gamer – Facebook gamers.

"We have satisfied hardcore gamers for decades," the id Software co-founder told Venture Beat.

"Now it's time for the rest of the world. Our opportunity is to teach the rest of the world how to play games."

Romero hopes to achieve his goal through the California-based developer Loot Drop. Its small team plan to publish games for multiple social game publishers.

Loot Drop has funding from social game publisher RockYou, which will publish Romero's first game soon.

But Romero's already tasted sweet success in the social game space with Facebook game Ravenwood Fair, which a whopping 10 million people play every month.

Romero's new role as the designer of the next big social experience is a far cry from the one that made his name.

Romero co-founded id Software with John Carmack, Adrian Carmack and Tom Hall, and designed some of the most influential games of all time.

Romero left to start Ion Storm and created the controversial Daikatana. In 1997 he appeared on an advert for the game that said: "John Romero's About To Make You His Bitch....Suck it down." That didn't go down well, and some 10 years later Romero apologised to fans for it.

After Ion Storm closed in 2001, Romero formed mobile game developer Monkeystone Games. After leaving that company, he joined Midway Games in 2003. He left two years later, starting MMO developer Slipgate Ironworks, which became the core studio of Gazillion. That didn't work out as planned, either.

Now the 43-year-old has a very different outlook on the creation of videogames, and believes in experiences fuelled by virtual item purchases. "The game industry is dropping down on top of social," Romero said. "We don't have a view of strip mining the players for cash. When a player gives you money, you want them to feel good about giving you that money."

Romero will launch four Loot Drop games this year, to be published and marketed by other companies.