Videogaming has never seen such a meticulously detailed digital landscape, let alone one so beautifully realised. Mountainous, tree-dotted vistas implore you to spin around and take it all in. Between the nine architecturally and culturally diverse cities and the equally varied outdoor locales and dungeons, the in-game world of Cyrodiil feels real. Light blooms off guards' armour at high noon while bathing the sky in hue-tiful purples and oranges at dawn and dusk.

Above: That's not just a painting, that's an environment - some quests send you into the canvas for a watercolour adventure

But it's the sheer volume of never-tedious things to do that makes Oblivion a bar-raising masterpiece. In approximately 50 hours that we spent living a virtual life in Cyrodiil, we never once felt bored or short-changed, whether we were purging orcs from overrun towns or saving artists who'd been trapped inside their magical paintings (requiring you to go into the artwork, watercolour walls and all).

You'll find countless side jobs and quests; each of the four major side-stories - one for each main workers' guild - takes longer to play through than most entire games these days. Throw in all sorts of other non-obvious goodies like rideable horses, hidden shrines, player-creatable spells and even unicorns and vampires (the latter of which you can become yourself), and the sheer quantity of content is alarming.