In the first wave of sets, the Power Miners are sent underground to investigate seismic activities. There, they discover that native Rock Monsters, rather than eating their natural food source, have started eating Power Crystals that cause them to unleash these devastating earthquakes. The Power Miners set out to excavate these crystals to stop the Rock Monsters from eating them, but the mischievous Rock Monsters keep getting in their way. Eventually, the Power Miners face even larger Rock Monsters, including Tremorox, Geolix, and the legendary Crystal King.
In the second wave of sets, after their encounter with the Crystal King, the Power Miners descend even deeper into the Earth's crust and discover Lava Monsters, posing an even greater threat than the Rock Monsters due to their superheated bodies. The Power Miners continue excavating the crystals while using water to cool down the Lava Monsters to lessen their volatility.
LEGO Power Miners is often considered a Spiritual Successor to Rock Raiders. Compared to its predecessor, Power Miners has much less emphasis on individual characters and goes for a much more Lighter and Softer approach, especially with its goofy Rock Monsters. However, it is agreed that the set designs of Power Miners are far superior to the simple builds of Rock Raiders sets, even if the lime/orange color scheme is rather contested.
LEGO Power Miners contains examples of:
- The Alcatraz: Lavatraz serves as one for Lava Monsters.
- Alliterative Name: Power Miners takes after its predecessor with vehicle names like Mine Mech, Granite Grinder, Boulder Blaster, Cave Crusher, Magma Mech, and Claw Catcher.
- Amusing Injuries: The Rock Monsters go through these in the animated shorts.
- Beneath the Earth: The entire setting of the theme.
- The Cameo: Rock Monsters reappear in LEGO: The Adventures of Clutch Powers, LEGO Rock Band, and LEGO Battles: Ninjago, and Rex is an unlockable character in the latter. Rock Monsters were also intended to appear in LEGO Universe, with the smaller monsters being called "Rock Goblins" and larger monsters called "Rock Trolls" in the game files.
- Chromosome Casting: Unlike its predecessor, there are no female characters in this line.
- Convection Schmonvection: Although the Power Miners have upgraded suits and armor for dealing with the Lava Monsters, their faces are still left largely exposed to the burning heat of magma beneath the Earth's crust... and no one gets burnt.
- Dishing Out Dirt: The Rock Monsters, but especially the larger monsters who throw boulders or even their smaller brethren at foes.
- Drill Tank: Many of the Power Miners' vehicles, but especially the Thunder Driller.
- Elaborate Underground Base: The Underground Mining Station and Lavatraz.
- Family-Friendly Firearms: Most of the weapons in the 2010 wave of sets feature water guns. It makes more sense when you consider the monster of the week.
- Faux Shadow: Doc's online bio mentioned something about a portal. It was expected that this was foreshadowing the source of the Rock Monsters... but nope, it was never mentioned again.
- Green Rocks: The Power Crystals, even if they're not always green.
- Humongous Mecha: The Magma Mech.
- Lighter and Softer: Compared to Rock Raiders.
- Magma Man: The Lava Monsters.
- Meaningful Name: Brains is the smartest member of the Power Miners.
- Mini-Mecha: The Mine Mech.
- No Name Given:
- Aside from the four named Power Miners characters, there are a few generic miners who aren't named.
- Double Subversion with the Crystal King. Initially, he was named RockRage in his online bio, but the name was later redacted.
- Non-Malicious Monster: The Rock Monsters are more mischievous rather than actively malicious.
- Obliviously Evil: The Rock Monsters are likely unaware that eating the crystals causes devastating earthquakes on the well-populated planet surface.
- Phlebotinum Muncher: The Rock Monsters and Lava Monsters.
- Playing with Fire: The Lava Monsters.
- Power Crystal: When eaten by Rock Monsters, it energizes them so much that they cause earthquakes.
- Punny Name:
- Most of the Rock Monsters and Lava Monsters have rock- or lava-based puns for names. For instance, Tremorox and Eruptorr.
- Lavatraz. It's a Lava Monster prison. Get it?
- Rock Monster: Here, they are depicted as short, stocky rock creatures that are mischievous and, when eating Power Crystals, get so hyped up that they send out seismic vibrations and cause earthquakes on the surface. Older Rock Monsters tend to be larger, and the oldest and largest known Rock Monster is the Crystal King.
- Spiritual Successor: To Rock Raiders.
- Stealth Sequel: LEGO Atlantis acts as one for Power Miners. As it turns out, after working with the Power Miners, Brains joins the ATLANTIS crew.
- This Is a Drill: Obviously.
- Tunnel King: The Power Miners, naturally.