“Minecraft” is an incredible game. It’s basically virtual Legos, and you can play it with dozens of friends. And sometimes, friends who play “Minecraft” together become people who create something magical in “Minecraft” together.

Such is the case with “Pokémon Cobalt and Amethyst,” a “60- to 80-hour” Pokémon game built entirely within “Minecraft.” For real! Just look at this:

Minecraft (Pokémon)YouTube

We’re talking about the good stuff: finding, battling, and capturing Pokémon — and then battling other Pokémon with the ones you’ve enslaved. There’s a full story, various locales to explore, and much more. Better yet, it’s entirely free! All you need is a copy of “Minecraft” on PC or Mac, and about 15 minutes.

Here’s the deal: