Tucked away in an attic is a century-old clockwork box – an archive of Olivia McLumen’s fascinating inventions. In the brilliant puzzler lumen., you’ll angle mirrors and lenses to bounce beams around the inside of the box, lighting up frames of film that reveal the fictional genius’s body of work.

What we love: How tactile it feels. Olivia’s intricate contraption is a marvel of art deco brass and chunky buttons; it looks like a real-world piece of antique machinery. Turn-of-the-century instrumental jazz and a cozy vibe make even the trickiest puzzles inviting.

Quick tip: You don’t need to use every mirror or lens for each puzzle – even if you’re trying to collect all three stars for a perfect solve.

Meet the creator: Lykke Studios is known for creative, family-friendly puzzle games like tint., puffies., and stitch. The inspiration for lumen. was the Feeding Machine in Charlie Chaplin’s classic film Modern Times.