Game overview
htoL#NiQ: The Firefly Diary
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.
- Last tracked players
- 2
- All-time peak
- 2
- 24-hour change
- Unavailable
- Steam reviews
- 69.3% positive 612 reviews · via SteamSpy
Delayed observation · last tracked . Values marked unavailable are not estimated.
About this game Read the full description
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...
Media gallery 8 screenshots · 0 videos
Screenshots
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Latest news
All news on Steam ↗System requirements Windows
Windows
Minimum
Minimum:- OS *: Windows 10/8.1/7/Vista
- Processor: Intel Core i3-2310M 2.10 GHz
- Memory: 2 GB RAM
- Graphics: Intel HD Graphics Family
- DirectX: Version 11
- Storage: 2 GB available space
- Sound Card: Realtek High Definition Audio
Recommended
Recommended:- OS *: Windows 10/8.1/7/Vista
- Processor: AMD A10-5800K APU with Radeon™ HD Graphics
- Memory: 2 GB RAM
- Graphics: NVIDIA GeForce GTX 560 Ti
- DirectX: Version 11
- Storage: 2 GB available space
- Sound Card: Realtek High Definition Audio
Game details Languages, features & support
- Publisher
- NIS America, Inc.
- Brazilian rating
- 14
- Steam Germany rating
- 16
- Content warning
- Blood Fantasy Violence
- Achievements
- 24
- Controller support
- full
- Features
- Single-player, Steam Achievements, Full controller support, Steam Trading Cards, Steam Cloud, Family Sharing
- Languages
- English, Japanese
- Website
- Official website ↗
- Support
- [email protected]
Compatibility & accessibility Steam Deck, controllers & access features
Can I Play This?
Steam declarations and Valve's Steam Deck compatibility result. Missing data is shown as unknown, never unsupported.
Native Steam builds
Windows: unknown
macOS: unknown
Linux: unknown
Steam Deck
playable
Valve compatibility test
Input
Controller support: unknown
Structured language support (2)
| Language | Interface | Full audio | Subtitles |
|---|---|---|---|
| English | Yes | No | Yes |
| Japanese | Yes | No | Yes |
Steam store page
fresh · checked 2026-10-05
PCGamingWiki technical notes
External link only; SteamIQHQ does not ingest PCGamingWiki content.
More analysis Activity patterns, updates & developer tools
Game Insights
Buy Verdict
Watch — $1.99.
Decent deal at 80% off, but might drop further. Watch for better opportunities.
▲
~42 days until next sale
Value Score
Great Value — 89th percentile.
Price-to-player ratio ranks in the 89th percentile. Priced as Market at $1.99.
▲
Market pricing tier
Genre Benchmarks
Player Count
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Value Ratio
Top 11%
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Developer Analytics
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Frequently Asked Questions
Is htoL#NiQ: The Firefly Diary worth buying right now?
Watch — $1.99. Decent deal at 80% off, but might drop further. Watch for better opportunities.
When does htoL#NiQ: The Firefly Diary go on sale?
Decent deal at 80% off, but might drop further. Watch for better opportunities.
Is htoL#NiQ: The Firefly Diary free to play?
htoL#NiQ: The Firefly Diary costs $1.99 on Steam.
What genre is htoL#NiQ: The Firefly Diary?
htoL#NiQ: The Firefly Diary is a Adventure, Strategy game.
Who developed htoL#NiQ: The Firefly Diary?
htoL#NiQ: The Firefly Diary was developed by Nippon Ichi Software, Inc. and published by NIS America, Inc..
What platforms does htoL#NiQ: The Firefly Diary support?
Available on Steam for Windows.
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