LEGO The Big Bang Theory
Set #21302 · 2015 · 498 pieces · Substantial build
Set Details
- Set Number
- 21302
- Name
- The Big Bang Theory
- Year
- 2015
- Pieces
- 498
- Complexity
- Substantial
- Build Time
- 2-4 hours
- Ages
- 10+
- Type
- Great for display
About LEGO The Big Bang Theory
LEGO The Big Bang Theory (set #21302) is a detailed build with 498 pieces from the LEGO Ideas and CUUSOO theme, released in 2015. The LEGO Ideas and CUUSOO line features fan-designed sets voted into production by the community. This is a substantial-level build suitable for ages 10+, with an estimated build time of 2-4 hours.
Set Highlights
- 498 pieces at substantial complexity — a 2-4 hours build.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Display-focused design — the finished model holds together well on a shelf without support.
Who Is This Set For?
Gift for Ages 10+
The substantial difficulty makes this accessible without being trivial — a well-matched gift for LEGO fans in the 10+ age range.
Weekend Build Project
498 pieces with an estimated 2-4 hours fits comfortably into a focused afternoon or weekend session.
Expanding a LEGO Ideas and CUUSOO Collection
A solid addition for collectors building out their LEGO Ideas and CUUSOO shelf. Introduces parts and builds that complement other sets from the same line.
Build Tips
A five-minute sort by color or piece type before starting saves time hunting for specific bricks mid-step.
Follow the numbered steps in sequence — structural elements early in the build support everything that comes after.
Once built, direct sunlight yellows ABS plastic over time. A display case or UV-filtered shelf glass keeps colors vibrant.
Finding Instructions
Building instructions for LEGO The Big Bang Theory (#21302) are available as a free PDF on LEGO.com. You can also upload a photo of this set to LegoFinder to identify it and access the instructions directly.
The Big Bang Theory FAQ
Related Reading
More LEGO Ideas and CUUSOO Sets
See all LEGO Ideas and CUUSOO →
![LEGO WALL•E [Original Version]](https://cdn.rebrickable.com/media/sets/21303-1.jpg)
Also Released in 2015
All 2015 sets →Similar Build Difficulty
Sets at roughly the same piece count and complexity tier — different theme and year, but a similar build experience.
Need Instructions for The Big Bang Theory?
Upload a photo of your LEGO The Big Bang Theory set and get the building instructions PDF in seconds.
Upload a Photo Now