LEGO Reviews Creator31115

Space Mining Mech

Name: LEGO Space Mining Mech 31115
Brand: LEGO
SKU: 31115
Rating: 4.8 (2340 reviews)

74 · RECOMMENDEDINVESTMENT GRADE: BBB2021327 pcsHigh agreement · 96%

Expert reviews

3analyzed

Owner ratings

2.3K+

Consensus

BUY

BrickScore

Recommended

Owners

Synthesized Verdict

"The Space Mining Mech earns its Recommended BrickScore of 73.7 as a rare Creator 3-in-1 where all three builds hold up, backed by 2,340 owners rating it 4.8 out of 5 and a 98% recommendation rate, with the only real drawback being the absence of a standard minifigure."

Three expert reviewers agree that the Space Mining Mech punches above its weight for a $24.99 Creator 3-in-1, praising three genuinely distinct and well-designed builds in an unusual and creative sci-fi aesthetic. The shared criticism is the absence of a standard minifigure, with only buildable alien and robot operators substituting. Owners are even more enthusiastic: 4.8 out of 5 across 2,340 ratings with a 98% recommend rate, placing this among the more beloved sub-$30 Creator sets. Critics and owners align on this one.

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LOVED (8)

01All three builds are respectable and individually well-designed, which reviewers note is rare for Creator 3-in-1 sets
02Bold, bulky, broad-shouldered main mech with a distinct sci-fi character
03Strong articulation across builds including hip, ankle, shoulder, elbow, and wrist ball joints
04Charming buildable alien companion using just 13 parts
05Creative part reuse: bubble canopy as shoulder armor, three-blade rotor at the knee, bracket eyes as fingers
06Solid price-to-parts ratio at 7.6 cents per piece
07Visual continuity with Creator space companions 31107 and 31111 in an informal Nova Space subtheme
08Durable cutting disc teeth that hold securely

CRITICIZED (4)

01No standard minifigure included; buildable alien and robot operators feel like a compromise to both expert reviewers
02Minor color inconsistencies: a pink modified brick buried in the torso and visible lemon-yellow brackets that jar against the color palette
03Tall alternate build has physics limitations due to height, restricting ankle articulation range
04Finger articulation on the main mech's hand is limited by piece interference

What reviewers are saying

"At first glance, to me, this looks believable. It looks right. It looks like something that I would see on the Art Station account of somebody who works on game design or uh possibly even uh movie design."

JANG's LEGO Reviews

"The main model is the titular 'Mech' and it is a bold, bulky, broad-shouldered, bionic, bipedal, b-movie buzz-saw brandishing brute!"

Brickset Reviews

"this is one of the best. Also, of all the Creator 3-in-1 sets, this particular model is one of my very favorites."

The Brothers Brick

Ecosystem

31107 Space Rover Explorer — 31115 continues stylistically and visually from 31107; both share livery, packaging artwork continuity, and new Classic Space character. 31115 is a worthy companion set part of same unofficial 'Nova Space' subtheme.

31111 Cyber Drone — 31111 shares the new Classic Space body and Exploriens/Spyrius droid head, reinforcing commitment to LEGO Space. 31115 fits cohesively with this and 31107 as part of 'Nova Space' subtheme. Reviewer recommends buying all three together for complete sub-theme collection.

31090 Underwater Mech — 31115 is a larger, bulkier companion to 31090. While 31090 was constrained in minifigure accommodation due to size (200 pieces, $20), 31115 (327 pieces) addresses this through better cockpit design, though still lacks minifigure in final release.

31090 Underwater Robot — Main mech is 'slightly similar' but 'a bit more complicated and interesting' (which is expected at higher price point)

CreatorTier 2Investment Grade

By Reviewer · 3

Avg score

Consensus

BUY

JANG's LEGO Reviews

Expert Video Source

BUY

Key Pros

✓All three builds are respectable and well-designed (not typical of three-in-one sets)
✓Good articulation across all builds (legs, arms, fingers)
✓Creative and audacious design aesthetic with alien themes

Key Cons

✕Some color compromises needed (includes red elements that aren't ideal; uses two different yellows)
✕No standard minifigure included with the set

JUMP TO REVIEW

Brickset Reviews

Editorial Source

BUY

"The main model is the titular 'Mech' and it is a bold, bulky, broad-shouldered, bionic, bipedal, b-movie buzz-saw brandishing brute!"

Key Pros

✓Bold, bulky, visually striking mech design with great character.
✓Excellent economy of parts; 13 parts for tiny alien and 14 for crystal formation.
✓Clever use of existing parts (bubble canopy, three-blade rotor, Mixels ball joint) creates engaging techniques.

Key Cons

✕No minifigure included; only buildable aliens/robots as drivers, which feel like inadequate substitutes despite clever design.
✕Pink Brick Modified 1x2x1 2/3 (22885) buried in torso—color inconsistent with palette despite being hidden.

READ FULL REVIEW

The Brothers Brick

Expert Video Source

WAIT FOR SALE

"this is one of the best. Also, of all the Creator 3-in-1 sets, this particular model is one of my very favorites."

Key Pros

✓Main mech is one of reviewer's favorite Creator 3-in-1 builds ever
✓Sturdy body construction typical of compact LEGO robots
✓Excellent joint and moving parts throughout main build

Key Cons

✕No minifigure included (only AI plate indicator), though tradition for this price point
✕AT-ST walker alternate build is 'awful' and 'lackluster'

JUMP TO REVIEW

Dimensional Analysis

Investment Layer

Buy now (1)Wait for sale (2)

Exclusivity

Brickset Reviews: Wide retail availability (standard Creator set through major retailers).

The Brothers Brick: Wide retail availability announced (LEGO Shop Online, Amazon, eBay)

Resale

Brickset Reviews: Reviewer does not explicitly address resale or aftermarket value. Context suggests typical Creator set trajectory: gradual price reduction during retail availability, potential future appreciation if Nova Space subtheme becomes nostalgic/collectible.

Minifigures & Standout Parts

Standout parts (per reviewers)

Cutting disc with strong teeth
For the main mining mech arm; very strong and does not fall off easily, which the reviewer appreciates.
Black bracket eyes used as raccoon-like fingers
Creative piece use on the hand to represent fingers, making them look like 'raccoon fingers' or 'raccoon hands.'
Trans-bright green pieces
Used to represent energy or other alien aesthetic elements on the two-legged alternate build.
Brick Modified 1 x 2 x 1 2/3 with Studs on 1 Side (22885)
Appears in pink and mostly hidden in torso; reviewer would have preferred white, yellow, red, or green for better color palette cohesion.
Bracket 99781 (lemon-yellow)
Brackets supplied in unexpected lemon-yellow color; creates visible seam in few areas. Reviewer prefers white (available in other 2021 sets), dark blue, red, or light bluish grey. Represents slight overcomplication in build instructions with separate bags for 'up' and 'down' brackets.
Bubble canopy (shoulders)
Repurposed as shoulder pieces; creates good visual effect despite minor gap from some angles.

What Owners Say · summarized from 17 written reviews (LEGO, Amazon, Walmart)

Owners praise the main mech's detailed design and build experience, but note that alternative builds lack proper parts sorting for their intended configurations.

COMMON PRAISE