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The Grotto Index
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The Grotto Index

By HVPIXELS

A cozy nonogram (picross) adventure. Descend a living dungeon and fill a naturalist's journal one picture-logic puzzle at a time. 100 hand-crafted specimens across 10 floors. No fail states, no guessing: every puzzle is solvable by pure logic. Just you, a lantern, and quiet discovery.

A closer look

The Grotto Index — gameplay screenshot 1The Grotto Index — gameplay screenshot 2The Grotto Index — gameplay screenshot 3The Grotto Index — gameplay screenshot 4The Grotto Index — gameplay screenshot 5

Information & artwork: Steam · Last checked Sep 13, 2026 22:42 UTC