This point-and-click adventure, which first launched on PC and Mac last year, follows the story of a character called Shade. As Shade, you need to wait 400 days for your king to awaken – the thing is, the game actually makes you wait 400 real days to see this happen, with a real-time countdown being present on-screen while you play.
We should point out that this doesn't mean you need to put in 400 days of gameplay, but rather, the king will awaken 400 days after you first start your adventure. The clock will countdown whether you have the game open or not, and it's up to you to get the most out of Shade's long wait. While waiting, you can explore dark caves, complete time-based puzzles, and collect items – the choice is yours.
If you're interested in seeing how these 400 days will unfold, you'll be able to get stuck into the game very soon indeed. The Longing launches on Nintendo Switch later today.
What do you think? An intriguing premise? Can you wait 400 days to see the ending? Let us know in the comments below.