Sonic Mania Plus was released into the world yesterday, giving players yet another chance to bask in the nostalgia of the blue hedgehog's old-school style. If you've managed to grab yourself a copy of the game, you might have noticed a secret code that reveals a lovely message for eagle-eyed fans.

The game comes with a gorgeous little art book, featuring concept and final artwork from the game itself, but if you look closely at the top of the back cover you'll find a morse code message. It's hard to see as it's so faint, but it is there, we promise!

As it turns out, the code reads "Together, we are greater than the sum of our parts". It's a nice little message that suits the Sonic Mania vibe, but will also no doubt bring a smile to the face of players who discover its meaning.

If you've got your own copy sitting at home, make sure to give this a check if you hadn't noticed it before!