Released in 2017, LEGO Minecraft The Mountain Cave (21137) brought an iconic location from the popular game to life in brick-built style. In the game, players explore caves and use tools to mine for treasure and materials, fighting mobs of monsters including slimes, zombies, spiders, creepers and more. With The Mountain Cave set, kids could bring their mining adventures off the screen and into the physical world, using minifigures of characters Alex and Steve to explore, mine, craft and battle. The set included authentic details from the game, such as a minecart elevator, rotating spider-spawner and a charged Creeper explosion. LEGO Minecraft.