Grand Theft Auto 6 has finally had its first big gameplay reveal, giving us our first real look at Rockstar’s massive open-world and the amount of detail it holds. It’s one that might be the most visually-impressive game we’ve ever seen, according to the experts at Digital Foundry. Digital Foundry’s Oliver Mackenzie and Richard Leadbetter have praised GTA 6’s visual presentation, with Mackenzie specifically going as far to call it the “most impressive example of real-time game rendering” he’s ever…