Get ready to have your mind blown with The Nebula (IQ Busters: Chroma Puzzle) by Outset Media. This wooden brainteaser is not for the faint of heart, with a difficulty level of 4 out of 4! Released in 2016, this puzzle is perfect for anyone aged 8 and up who loves a challenge.The Nebula will put your problem-solving skills to the test as you try to unlock its secrets. With its vibrant colors and intricate design, it's as visually stunning as it is mentally stimulating.