Headless Horseman OG is a hidden collectible inside the Halloween-themed building in Find the Brainrot. Reaching it means clearing a gated door, reading the colored lights that hint at a code, entering that code on the sequence panel, and choosing the correct pumpkin at the end. Do it right and your collection counter ticks up by one.
Quick answer: Climb to the barred door, open the What’s the sequence? panel, enter Blue, Red, Yellow, Light Green, then touch the burning pumpkin on the left pedestal to unlock Headless Horseman OG.
Where the Headless Horseman OG puzzle starts
Head through the Halloween portal and cross the purple terrain toward the dark building. The entrance sits at the top of an outdoor staircase, behind a door marked with red bars and a keypad. Interact with the red button beside the keypad to pass the gate and load into the interior.

Join readers who trust AllThings.How
Add us as a preferred source on Google so our practical guides show up first next time you search.
Add to Google Preferences →How to unlock Headless Horseman OG


Pick the pumpkin that has flames rising from it. The flaming one on the left is the correct choice, not the plain pumpkins on the other pedestals.
How to confirm the unlock worked
After you touch the burning pumpkin, a YOU FOUND! Headless Horseman OG reward screen appears on screen. Your collection counter also advances by one, moving from 55/523 to 56/523. If that screen shows and the total ticks up, the collectible is yours.

If the sequence panel rejects your input, reread the ceiling lights and re-enter the colors in order before trying the pumpkin room again. Once the reward screen confirms the find, Headless Horseman OG stays recorded in your collection.





