Magnibox has 160 levels in 8 worlds, and one level in each world has a secret. If you find them all, you get the Collect Secrets achievement.
World 1 (Purple)
The secret is on level 15.
World 2 (Green)
The secret is on level 10.
World 3 (Blue)
The secret is on level 17. Note that you have to push the crate on the pink pressure plate to reach that area, which isn’t necessary to solve the level itself.
World 4 (Orange)
The secret is on level 10.
World 5 (Pink)
The secret is on level 10.
World 6 (Red)
The secret is on level 17.
World 7 (Emerald)
The secret is on level 8.
World 8 (Night)
The secrt is on level 12.
Written by Dohi64