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About Grnibb Black Box
Find the Grnibbs hidden in the black box.
A logical puzzle. Choose the size of a black box and the number of Grnibbs you want to hide in it. The app places the Grnibbs in the box. Information you get when shooting light rays into the black box is needed to determine the position of the Grnibbs in the box.
What's new in the latest 1.2.1
Last updated on 2025-10-15
Minor changes in layout.
Gameplay and Screenshots
Grnibb Black Box APK Information
Latest Version
1.2.1
Category
PuzzleAndroid OS
Android 11.0+
File Size
9.0 MB
Developer
Michael OosterhoutContent Rating
Everyone
Old Versions of Grnibb Black Box
Grnibb Black Box 1.2.1
9.0 MBOct 15, 2025
Grnibb Black Box 1.1
7.9 MBMar 29, 2025
Grnibb Black Box 1.0.4
2.1 MBJan 26, 2022
Grnibb Black Box 1.0.2
2.1 MBFeb 21, 2019
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