htoL#NiQ: The Firefly Diary
Released May 2016
In the depths of a labyrinthine ruin, a young girl named Mion rises from a deep sleep. Lost, alone, and with no memory of how she got here or where her parents are, she is greeted by two fireflies—one composed entirely of light, and another who lurks among the shadows.
68% positive · 634 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Prices in USD, as listed by each store.
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Evaluation
htoL#NiQ: The Firefly Diary launched on Steam on May 18, 2016 as a complete, self-contained puzzle adventure game. The only post-launch content released was a Digital Art Book and Digital Soundtrack, both published on October 25, 2016 — supplementary extras rather than gameplay content. There are no unreleased DLC items, no developer announcements of future content, and no post-launch update activity of any kind. The game's store description presents it as a finished narrative experience with no indication of ongoing development. This is a fully complete release with no outstanding content commitments.
Evidence
Digital Art Book released as supplementary DLC — non-gameplay extra content
Digital Soundtrack released as supplementary DLC — non-gameplay extra content
Content
2 of 2 released · no outstanding content
Media
Details
Developer
Publisher
NIS America, Inc.
Achievements
24
Platform
Windows
Controller
full support
Steam Deck
Playable
Players
Single-player
About this game
At the bottom of an old ruin, a young girl named Mion awakens with no memory of how she arrived at this dreadful place. Guided by two fireflies, Mion must solve puzzles, outwit monsters, and avoid traps to escape the darkness!
In htoL#NiQ: The Firefly Diary, you will guide Mion's escape from her dark confines by controlling two fireflies—Lumen and Umbra. Direct Mion's movements as Lumen, and destroy obstacles as the shadowy Umbra. Untold mysteries await as you guide Mion to the surface, overcoming traps and puzzles along the way. But be warned—the shadows are never far, and they're always hungry...
In htoL#NiQ: The Firefly Diary, you will guide Mion's escape from her dark confines by controlling two fireflies—Lumen and Umbra. Direct Mion's movements as Lumen, and destroy obstacles as the shadowy Umbra. Untold mysteries await as you guide Mion to the surface, overcoming traps and puzzles along the way. But be warned—the shadows are never far, and they're always hungry...
Are these done yet?
Last evaluated Jun 27, 2026
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