Activity briefingSummary of recorded signals
SteamWatch briefing

Preparing a concise update from the latest recorded activity.

Steam player data · App 5120420

Starless Umbra Demo

View on Steam ↗Updated 12 Oct · 13:31 UTC
  • Single-player
  • Multi-player
  • Co-op
  • Shared/Split Screen Co-op
  • Shared/Split Screen
  • Game demo
  • Full controller support
  • Camera Comfort
Steam

Store data

UK price
Free
US price
Awaiting regional check
Positive reviews
100%
Total reviews
15
Release date
11 September 2026
Concurrent players0Most recent successful sample
Today's peak012/144 samples
Tracked peak0Highest retained daily peak
Steam rating100%15 reviews
Steam metadata

Game information

Details supplied by the Steam store
App ID
5120420
App type
Demo
Supported systems
Windows · Linux
Genres
Action, Adventure, RPG
Release date
11 September 2026
Last player update
12 Oct · 13:31 UTC
Steam store data

System requirements

Supplied by the developer on Steam

Windows

Minimum
Requirement
Requires a 64-bit processor and operating system
OS
Windows 10
Storage
200 MB available space
Recommended
Requirement
Requires a 64-bit processor and operating system

Linux

Minimum
Storage
200 MB available space

Launch window

Released 11 September 2026 · Tracking from 12 October 2026

SteamWatch’s first observed day and week; tracking can begin after release. Top Sellers is Steam’s revenue ranking, not a sales estimate.

First observed dayIn progress
Player peak
0
Steam reviews
15100% positive
Twitch peak
Not recorded
Price observed
Free
Top Sellers
No appearanceNo ranked days

1 player-data day recorded in this window.

First observed weekIn progress
Player peak
0
Steam reviews
15100% positive
Twitch peak
Not recorded
Price observed
Free
Top Sellers
No appearanceNo ranked days

1 player-data day recorded in this window.

Explore charts ↓
Player history

Concurrent players

Peak 0Average 0Latest 0
0011112 Oct 2026, 11:00 UTC12 Oct 2026, 13:00 UTC

24-hour and 7-day views use hourly peaks from ten-minute samples. Longer views use retained daily peaks. Up to 24 recent event markers are shown per layer.

Twitch

Twitch stats

Awaiting the first Twitch sample.
Long-term history

Monthly players breakdown

Calculated from SteamWatch samples
MonthPeakGain% gainAverageAvg % gain
Last 30 days0——0—
October 20260——0—
Explore game activity ↓
About this game

Description

Supplied by the Steam store

Join Amalia as she searches for her friend in a land afflicted by a noxious fog. The deeper she ventures, the further she unravels a force that threatens far more than just one life.

Real-time combat

Start battles as you approach enemies on the field in a real-time battle system. No random encounters, no turns.

Choose from skills that encourage rapid resource management and clever positioning . HP replenishes after battle if your party is in good spirits.

Manipulate enemy focus (aggro) , encourage teammates, and master skill rotations in a system inspired by MMORPGs and action RPGs.

Play with friends (couch co-op) for even more chaos.

Plenty of character customization

Select abilities and enhance them with augments , discoverable gems that change how skills behave.

Learn passive abilities from equipment , such as combat-start buffs or bonuses when allies fall.

Combine skills to create devastating combos.

A focus on fun

Generous 2-hour demo  focused on grounded relationships in a deadly fog-plagued world.

Gameplay variety : minigames, puzzles, and quests; performance affects difficulty.

Encouraged item usage ; refill empty bottles in towns instead of hoarding.

This project was built over 20 years through multiple engines, story rewrites, and with the help of a patient, supportive community.

zexyu - Story, engineering, graphics

SaKo - Character portraits

puking rabbit - Monster sprites

Pipasdefranilla - Character sprites

Brandon McKagan - Music

Steam gallery

Screenshots

7 available
More game data · Seller history