Brain Riddle: Tricky Box level guide
Brain Riddle: Tricky Box Level 21 Walkthrough
Follow the colored key chain from the floating red key through the red, green, and blue chests, then carry the yellow key from the blue chest to the chained right-hand door.
Open on YouTube
If the player asks you to sign in, open the video on YouTube instead.
How to Solve Brain Riddle: Tricky Box Level 21 — Full Solution
- Jump from the lower-left start onto the long middle platform and collect the floating red key.
- Drop to the ground, move right, and use the red key on the red chest to reveal a green key.
- Carry the green key left to the green ground chest, open it, and collect the blue key.
- Jump back onto the middle ledge, continue left, and jump onto the upper-left platform.
- Use the blue key on the blue chest and take the yellow key released from inside.
- Return to the ground and move right past the unopened yellow and orange chests.
- Touch the chained lower-right door with the yellow key, then enter the opened portal for the success overlay.
Common Mistakes to Avoid
- Trying to open all five chests instead of following the color sequence revealed by each key.
- Carrying the final yellow key to the yellow middle chest rather than the chained exit.
- Stopping after the door chains fall without walking Boxy through the portal.
Quick Tips for Brain Riddle: Tricky Box Level 21 (spoiler-free)
- Open only the red, green, and blue chests shown in the verified chain.
- After taking the blue key, climb through the middle ledge to reach the upper-left chest.
- Carry the final yellow key directly to the chained right-hand door.
Board notes 5 details
- Layout
- Boxy begins beside an open lower-left door, while a chained pink exit waits at the lower right. Green and red chests sit on the ground, a yellow chest occupies the middle ledge, and blue and orange chests sit on the two upper ledges; a red key floats over the middle platform.
- Goal
- Complete the red, green, and blue chest chain, then use the yellow key released by the blue chest to unlock and enter the lower-right exit.
- Opening
- Jump onto the long middle platform, collect the red key, and drop beside the red ground chest to begin the chain.
- Danger Zone
- The yellow middle chest and orange upper-right chest are visible decoys. The yellow key from the blue chest must go to the chained door, not the yellow chest.
- Mechanics
- Correctly matched keys are consumed by chests that release the next color, creating a red-to-green-to-blue-to-yellow dependency chain across three heights.
Frequently Asked Questions
Which chests do I open in Level 21?
Open the red ground chest, the green ground chest, and the blue upper-left chest in that order.
What is the yellow key for?
The yellow key released by the blue chest unlocks the chained door at the lower right; it is not needed for the yellow chest.
Do I need the orange chest?
No. The upper-right orange chest remains closed in the verified solution.