The game is full of the requisite adventure game puzzle solving.

"Once I had the idea, I thought it was so strong that I couldn't let go of it, especially the title," Miller said. "I think the title was the first thing I came up with - it says everything you need to know about it. I thought, I would love to play that game. I got to a point where I thought, well, I don't want to be 60 or 70 and thinking, oh, why didn't I try that? I had to make it."

The first step was to create an adventure game toolkit from scratch. "I'm a Linux developer by trade, and I love open source software. The engine was written in Python, and it's separate from the game, and publically available. Even the game's music is all open source."

Beyond the technical aspects, though, Miller knew that what the game would need to really make it work would be the right art. "One of the things that first gave me the idea was the work of Joe Phillips, the really famous gay comic artist and cartoonist," he explained. "He drew Wonder Woman and Superman in the 1990s for DC Comics, and every year he does a calendar."

"I thought, if I could do it in that style, that sort of wholesome, colourful, Disney style, that would kind of keep it on the right side of that line, where it's a celebration rather than pornographic. So for years I was looking for someone who could do art like Joe Phillips, and then one day, after social networking came along, we became friends on Facebook, and I thought, well, instead of looking for someone like him, why not just ask Joe Phillips? He said yes!"