Indeed, if Portal 2 has a flaw, itвЂ™s the inability to conjure a mechanic thatвЂ™s equally good. But the way Portal 2 unpacks that box without breaking the content makes it every bit as good as the game itвЂ™s based upon.ДЄs a sequel, the biggest hurdle Portal 2 faces is that while it features the exact same mechanical magic as the first game, it canвЂ™t make you feel the way you did about it when you first connected two points in space with a gun that makes holes (not bullet holes, but, well, youвЂ™ll figure it out). I agree that Portal is close to flawless, a precisely packaged little box of a game. The main reason Portal is deemed perfect is because it is short, making it seem a pristine little gem in a medium that so often prioritises bigness. IвЂ™ve played both Portals a lot over the last couple of years, because my daughter loves them, and IвЂ™m confident in saying what I was too cowardly to say back in 2011, that the second game is better.

Why the hell wouldnвЂ™t Valve do it with Portal? It did it with Left4Dead (which everyone thought was a terrible idea before they played it). Sequels stand or fall on their own merit, and if thereвЂ™s any developer that can make a sequel to a game that doesnвЂ™t need one, itвЂ™s Valve. And yet it got one anyway, which also turned out to be one of the best films ever made. But Alien is a perfect horror film and doesnвЂ™t need a sequel.

Making a sequel to Portal, it seemed, was like making a sequel to cake. It had an innovative concept, puzzles that bent both space and your mind, a story that punched far above its weight, and a witty script that introduced one of gamingвЂ™s most iconic baddies. Certainly, few games exhibit such watertight design as ValveвЂ™s experimental puzzler, which stole the show of the Orange Box when it released in 2007.

Portal didnвЂ™t need a sequel, it was said, because Portal is a perfect game.

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