FIRST LEGO League 2025 UNEARTHED

The competition dives deep into the mysteries of the past, inviting students to uncover hidden treasures, reveal forgotten stories, and share history with the world in bold, new ways. This season’s UNEARTHED Challenge robot game features 15 thrilling missions that teams can tackle using SPIKE or EV3 robots.

How to prepare

The most important thing we need is for our robots to perform with consistency and reliability throughout the season. That’s exactly what the FIRST LEGO League Complete Guide is here for — helping you master the skills to build robots that can reliably complete the missions. Explore the full guide first, then dive into the Building Instructions and Tips & Tricks to put your knowledge into action.

Prepare

Building Instructions

Follow the 3D building instructions to assemble the FIRST LEGO League mission models.

FLL 2025 Building instructions
FLL 2025 UNEARTHED research vessel

Tips and Tricks

Each year, we share tips and tricks for approaching the season’s missions. These aren’t ready-made solutions — those only come in a review after the season wraps up at the end of July. Instead, our tips and tricks let you explore how similar challenges have been tackled in the past, spark new ideas, and hear insights from experienced engineers and mentors. That’s the essence of engineering — learning from what’s been done, then building something even better.

FLL 2025 Tips and Tricks
FLL 2025 UNEARTHED Mission Model Map Reveal