After opening the images full size, eagle-eyed fans spotted The Sims green diamond icon on the taskbar of the Rowling’s laptop – and have since been sharing their excitement over the revelation on social media.

And, perhaps unsurprisingly, many couldn’t wait to ask Rowling for every little thought she has about the game.

One user asked, “? you play sims?”, while another surmised a correlation between the two fantasy worlds, writing, “Of course she plays sims – where do you think she got the idea for magical people from?”

Meanwhile, some people have begun re-imagining Harry Potter book titles using classic Sims situations as inspiration, with hilarious results.

JK Rowling's video game confession has sparked a full-scale Twitter frenzy