Venture to the Red Planet!
Explore Mars with RCX

Unleash your inner astronaut with this classic 1999 set. Build and program your own Martian rover!

🏛 RCX
Set #9736

Exploration Mars

Exploration Mars is a fascinating glimpse into LEGO's robotics era.

🏆 Best For: Ideal for LEGO fans interested in robotics and early programmable models ⏱ 3 hr build 🧩 158 pcs
★★★☆☆ 3.8

A unique set that blends LEGO with early robotics, praised for its innovative use of the RCX brick. However, some find the building experience simple compared to modern Technic sets.

MSRP
$49.99
Best Price
$44.99
You Save
10% OFF
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📝 Our Take

Exploration Mars is a fascinating glimpse into LEGO's robotics era. Released in 1999 under the RCX theme, it combines classic LEGO building with programmable functionality, a forward-thinking concept for its time.

This set is perfect for LEGO enthusiasts interested in early robotics and Technic integration. It offers a unique building experience, blending standard bricks with electronic components to create a functional rover.

Skip this if you're solely focused on display pieces or elaborate builds. While innovative for its time, it lacks the aesthetic appeal of modern sets; consider LEGO Technic sets for more advanced robotics.

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How does the RCX system compare to modern LEGO Mindstorms? What are some creative ways to program the Exploration Mars rover? How does this set fit into the broader history of LEGO robotics? What are the key factors influencing the value of vintage LEGO sets like this one?

🧱 Building Experience

🧩
158
Pieces
3h
Build Time
📊
Intermediate
Difficulty
Build Highlights:
  • Integrating the RCX brick for programmable movement
  • Using Technic gears and axles to create a functional drivetrain
  • Building a robust chassis capable of navigating various terrains
  • Experimenting with different programs to control the rover's actions

📈 Investment Analysis

↑ Trending up since release
B
Investment Grade
⏳ Appreciating
The Exploration Mars set presents a moderate investment opportunity. Its age and association with the RCX theme, a precursor to LEGO Mindstorms, give it historical significance. The rising price trend suggests growing interest among collectors. However, its relatively small piece count and niche appeal might limit significant appreciation. Maintaining the set in pristine condition with original packaging is crucial for maximizing its investment potential.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

Compare Similar Sets

Compared to modern LEGO Technic sets, Exploration Mars offers a simpler, more accessible introduction to robotics. While it lacks the complexity and advanced features of newer sets, its historical value and unique RCX system make it a worthwhile addition to any LEGO collection. Consider modern Mindstorms sets for more advanced robotics or vintage Technic sets for similar era building experiences.

📦 Full Parts Inventory - 58 unique parts • 158 total pieces

Wedge Plate 3 x 6 Cut Corners Wedge Plate 3 x 6...
Part #: 2419 Black
Antenna 8H Whip Antenna 8H Whip
Part #: 2569 Trans-Neon Green
Support 2 x 2 x 5 Lattice Pillar, Complete Assembly Support 2 x 2 x 5...
Part #: 2580c01 Black
Magnet Holder 2 x 3 Magnet Holder 2 x 3
Part #: 2607 Red
Technic Brick 1 x 10 [9 Pin Holes] Technic Brick 1 x...
Part #: 2730 Red
Motor Pulley, 9V Micromotor with axle hole Motor Pulley, 9V ...
Part #: 2983 Light Gray
Brick 2 x 4 Brick 2 x 4
Part #: 3001 10× Red
Panel, Trapezoid, Tipper End Flat without Pins Panel, Trapezoid,...
Part #: 30022 Yellow
Brick 2 x 2 Brick 2 x 2
Part #: 3003 Red
Brick 1 x 2 Brick 1 x 2
Part #: 3004 Red
Support Leg Large [Insectoids] Support Leg Large...
Part #: 30212 Dark Gray
Plate 6 x 16 Plate 6 x 16
Part #: 3027 Black
Tile 1 x 2 with Groove Tile 1 x 2 with G...
Part #: 3069b Light Gray
Tile 1 x 2 with Telemetry Panel Print Tile 1 x 2 with T...
Part #: 3069bpr0043 White
Tile 1 x 2 with Blue and Yellow Control Panel Print Tile 1 x 2 with B...
Part #: 3069bpr0047 White
Tile 1 x 2 with Red and Yellow Control Panel Print (Original) Tile 1 x 2 with R...
Part #: 3069bpr0048 White
Technic Axle and Pin Connector Angled #1 Technic Axle and ...
Part #: 32013 Blue
Technic Axle and Pin Connector Angled #2 - 180° Technic Axle and ...
Part #: 32034 Light Gray
Technic Steering Arm with 2 Pins Technic Steering ...
Part #: 32069 Black
Slope 33° 3 x 2 Slope 33° 3 x 2
Part #: 3298 Red
Technic Gear 8 Tooth Technic Gear 8 Tooth
Part #: 3647 Light Gray
Technic Gear 24 Tooth [New Style with Single Axle Hole] Technic Gear 24 T...
Part #: 3648b Light Gray
Technic Gear 24 Tooth Crown with Reinforcements [New Style] Technic Gear 24 T...
Part #: 3650c Light Gray
Turntable 2 x 2 Plate - Top Turntable 2 x 2 P...
Part #: 3679 Light Gray
Turntable 2 x 2 Plate, Base Turntable 2 x 2 P...
Part #: 3680 Blue
Technic Brick 1 x 8 [7 Pin Holes] Technic Brick 1 x...
Part #: 3702 Red
Technic Brick 1 x 16 [15 Pin Holes] Technic Brick 1 x...
Part #: 3703 Black
Technic Axle 4 Technic Axle 4
Part #: 3705 Black
Technic Axle 6 Technic Axle 6
Part #: 3706 Black
Technic Axle 8 Technic Axle 8
Part #: 3707 Black
Technic Axle 12 Technic Axle 12
Part #: 3708 Black
Technic Axle 10 Technic Axle 10
Part #: 3737 Black
Technic Plate 2 x 8 [7 Holes] Technic Plate 2 x...
Part #: 3738 Red
Technic Gear Rack 1 x 4 Technic Gear Rack...
Part #: 3743 Light Gray
Wedge Plate 8 x 4 Wing Left Wedge Plate 8 x 4...
Part #: 3933 Black
Wedge Plate 8 x 4 Wing Right Wedge Plate 8 x 4...
Part #: 3934 Black
Brick Round 2 x 2 with Axle Hole Brick Round 2 x 2...
Part #: 3941 Red
Technic Gear 16 Tooth with Round Holes [Old Style] Technic Gear 16 T...
Part #: 4019 Light Gray
Technic Wedge Belt Wheel [aka Pulley] Technic Wedge Bel...
Part #: 4185 Light Gray
Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°] Dish 6 x 6 Invert...
Part #: 4285b Black
Technic Axle 3 Technic Axle 3
Part #: 4519 Black
Cone 1 x 1 [No Top Groove] Cone 1 x 1 [No To...
Part #: 4589 Trans-Neon Green
Technic Worm Gear Technic Worm Gear
Part #: 4716 Black
Wire with Brick 2 x 2 x 2/3 Pair, 378L Wire with Brick 2...
Part #: 5306bc378 Black
Technic Axle Connector Ridged [with x Hole x Orientation] Technic Axle Conn...
Part #: 6538b Light Gray
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Technic Axle 1.5 ...
Part #: 6553 Light Gray
Tyre 43.2 x 28 Balloon Small Tyre 43.2 x 28 Ba...
Part #: 6579 Black
Wheel 43.2 x 28 Balloon Small Wheel 43.2 x 28 B...
Part #: 6580 Yellow
Technic Axle 3 with Stud Technic Axle 3 wi...
Part #: 6587 Dark Gray
Technic Gearbox 2 x 4 x 3 1/3 Technic Gearbox 2...
Part #: 6588 Yellow
Technic Gear 12 Tooth Bevel Technic Gear 12 T...
Part #: 6589 Light Gray
Technic Gear Rack 1 x 8 with Holes Technic Gear Rack...
Part #: 6630 Light Gray
Magnet Cylindrical Magnet Cylindrical
Part #: 73092 Black
Technic Shock Absorber 6.5L with Normal Spring [Complete Assembly] Technic Shock Abs...
Part #: 73129 Light Gray
Rubber Belt Small [15mm ID] [Round Cross Section] Rubber Belt Small...
Part #: 85543 White
Technic Rubber Belt Medium [24mm ID] [Round Cross Section] Technic Rubber Be...
Part #: 85544 Red
Technic Universal Joint 4L [Complete Assembly] Technic Universal...
Part #: 9244 Light Gray
CD-Rom, for 9736 CD-Rom, for 9736
Part #: upn0133 [No Color/Any Color]
The set contains a good selection of Technic gears and connectors, useful for building functional models. The black 6 x 16 plates provide a solid base for larger MOCs.

🛒 Where to Buy

eBay
✓ In Stock
$44.99
Walmart
✓ In Stock
$47.49
Target
✓ In Stock
$49.99
Amazon

💎 Notable Parts

Black Tyre 43.2 x 28 Balloon Small (6x) $1.50
Light Gray Technic Gear 24 Tooth [New Style with Single Axle Hole] (6x) $1.20
Light Gray Technic Axle and Pin Connector Angled #2 - 180° (4x) $0.80
Light Gray Technic Gear 12 Tooth Bevel (4x) $0.60
Est. BrickLink Part Value
$4.10

💡 MOC Potential

🤖 Advanced robotic arms with enhanced functionality
🚗 Heavier-duty rover with improved suspension
🚀 Mars base command center with integrated rover garage

📰 RCX News

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

Based on 5 videos
3.0 /5
Mixed
0% positive
BlockTalk AI

LEGO YouTubers provide neutral reviews of the Exploration Mars set, focusing on building and functionality. Reviews showcase LEGO Technic Mars rovers and other space-themed sets, with detailed building reviews and comparisons of different sets.

Community Sentiment

Based on 5 YouTube reviews

Reddit

Not enough Reddit data

YouTube

3.0 /5
Mixed
0% positive
0
Positive
5
Mixed
0
Critical
BlockTalk AI Analysis

LEGO YouTubers provide neutral reviews of the Exploration Mars set, focusing on building and functionality. Reviews showcase LEGO Technic Mars rovers and other space-themed sets, with detailed building reviews and comparisons of different sets.

What the Community Says

5 YouTube reviews
BlockTalk AI Summary

RacingBrick offers a detailed building review of the LEGO Technic 42180 Mars Crew Exploration Rover and 42178 Surface Space Loader. JANG's LEGO Reviews provides independent, unscripted reviews of LEGO City Space Science Lab 60439 and LEGO Icons NASA Artemis SLS rocket & pad 10341.

Community Content: These reviews are from Reddit and YouTube users sharing their personal experiences. Opinions may vary.

Charts Inventory Statistics

58
Unique Parts
158
Total Pieces
0
Minifigures
Inventory Version: 1