While Lego blocks may be touted as the ultimate play gift for kids, its manufacturers are now working to make it one for adults as well. In acknowledging the fact that grown-ups are also entitled to some play-time, the marquee has recently introduced an all-new play set that caters specially to the creative and stress-busting needs of adults.

LEGO has unveiled all sorts of cool sets. For animal lovers, there are cat kits; aspiring architects can stack their own skylines; and, now, there is LEGO FORMA, a fish-inspired line geared toward overwhelmed grown-ups.

Intended to “add a splash of creativity to your day,” this new LEGO collection has been designed entirely with adults in mind. Unlike standard sets, LEGO FORMA is based on a “completely new aesthetic with much softer and organic forms,” Tom Donaldson, the chief of the Creative PlayLab at the LEGO Group, told Fast Company.

The new “LEGO FORMA”, as it is called, is “designed to help you reconnect with your imagination and disconnect from the stress of life.” The immersive play set comes with 294 individual elements, each built with the purpose to encourage play amongst adults. The pieces can be used by grownups (as well as kids above the age of 12) to create different fish skeletons that can be decorated with customizable skins. Each of the four available options also come with a crankshaft and gear system that helps in moving the final creations as though they’re in motion.

Instead of rectangular blocks rendered in bright hues, LEGO FORMA features neutral colored rods and parts. Once put together, these pieces form a three-dimensional fish skeleton, which can be customized with coloring-sheet “skins” that transform it into a shark or koi.

Along with a clever gear system, the blocks’ non-rigid nature allows these models to move in lifelike ways. With the simple turn of a crank, each fish comes to life, adding the tranquility of an aquarium to any space.

The idea to create building blocks for adults was conceptualized after Lego surveyed 13,000 participants, 91 percent of which believed that play is good for their well-being and 86 percent of which believed that it helped them feel more relaxed and stress free. The project (financed via a crowdfunding campaign) has now entered production, with the final Lego sets expected to hit shelves in January 2019.