Head-to-head
LEGO Icons NASA Artemis Space Launch System vs LEGO Icons Optimus Prime
Both built. Both reviewed. Here's how they actually compare on the things that matter.
Set #10341
LEGO Icons NASA Artemis Space Launch System
The SLS rocket. The Orion spacecraft. The mobile launcher. NASA's return to the Moon, captured in LEGO at 1m of vertical display energy.
Set #10302
LEGO Icons Optimus Prime
Robot mode. Truck mode. The Matrix of Leadership. The first LEGO set that actually transforms — and the only Transformer worth your shelf space.
By the numbers
The spec sheet.
| Metric | LEGO Icons NASA Artemis Space Launch System | LEGO Icons Optimus Prime |
|---|---|---|
| Rating | 5/5WINS | 4/5 |
| Pieces | 3,601WINS | 1,508 |
| MSRP | $259.99 | $179.99WINS |
| Price per piece | $0.07WINS | $0.12 |
| Verdict | Must buy | Recommended |
| Best for | Space enthusiasts, NASA fans, and Icons collectors who want a vertical display centerpiece without the architectural bulk. | Transformers fans and builders who want a set with genuine play value, not just display. |
Pros & cons
What I actually noticed.
LEGO Icons NASA Artemis Space Launch System
Pros
- 1m of vertical display height — the tallest LEGO space set ever made
- Iconic orange-and-white SLS livery in actual brick colour, not stickers
- Removable Orion spacecraft sub-build at the top
- Mobile launcher tower with detailed servicing arms
- Booster separation stages display modes
Cons
- Vertical footprint demands 1m+ of ceiling clearance
- Mobile launcher tower is tall and tip-prone — anchor it
- Some sticker work on the SLS livery panels
LEGO Icons Optimus Prime
Pros
- Genuinely transforms between robot and truck modes — no parts swap
- Movie-accurate G1 design, not the Bayverse style
- Includes the Energon Axe, Ion Blaster, Energon Cubes, and Matrix of Leadership
- Best-looking Transformers LEGO set by a large margin (vs Bumblebee, Soundwave)
Cons
- Transformation requires patience — first time takes 15+ minutes
- Some joints loosen over multiple transformations
- The hands are clip-on accessories, not articulated fingers
Made up your mind?
Pick a retailer.
Comparison generated from our individual reviews. Pros, cons, and ratings come from full hands-on builds — see each review for the complete take.