About Unknown-Chess
What the creator says, alongside confirmed listing details.
Unknown-Chess is a community item for Black Mesa listed on Steam Workshop.
Playble singleplayer + multiplayers coop 10+ players coop objective Stop Enemy Unknown the world included the maps: arena_coop_chess_challenge Multiplayer Coop...
Mod details
- Game
- Black Mesa
- Creator
- Lange-Déchu
- Category
- Unclassified
- Published
- July 4, 2019
- Last Workshop update
- October 15, 2025
- Workshop item
- #1791517809
Screenshots
1 image from the mod listing
Timeline
Key dates from the original listing and ModOrNot's catalogue.
-
First published
The item was first published on Steam Workshop. Steam listing ↗
-
File last updated
Latest file-change date reported by Steam Workshop. Steam listing ↗
Why it ranks here
Unknown-Chess currently has 121 subscribers. Recent growth metrics are unavailable; the last calculation was unknown.
Metrics from 2 stored snapshots. How ModOrNot ranks mods →
Subscriber change since tracked
View change since tracked
Favorite change since tracked
Platform availability
Availability is only claimed when an official source proves it. A platform we cannot verify is shown as “Not verified” — we never assume a PC Workshop mod runs on a console.
More Black Mesa mods
| Mod | Subscribers | 7d | Score |
|---|---|---|---|
| 123 | +97 | 99.8 | |
| 43 | +41 | 99.8 | |
| 97 | +58 | 99.6 | |
| 15 | +10 | 99.2 | |
| 122 | +48 | 99.0 |
Frequently asked questions
How popular is Unknown-Chess compared with other Black Mesa mods?
It ranks #1,989 among 2,828 tracked active Black Mesa mods by subscribers — within the top 70.33%. This is a subscriber-based position, not a quality verdict. Counts and placement can change as the catalogue updates.
Is Unknown-Chess available on PC?
The official Steam Workshop listing establishes PC distribution for Black Mesa. This does not verify current downloadability or compatibility with every PC configuration. Official source ↗
When was the mod last updated?
The source listing reports October 15, 2025 as the last file update. A later comment or catalogue refresh does not mean the mod file changed. Official source ↗
What does the ModOrNot Score mean on this page?
It is a 0–100 momentum signal: 50% subscriber-growth velocity relative to mods in the same game, 20% favorite growth, 20% view growth, and 10% update recency. It is not a quality rating. A recent score is unavailable for this mod, so no estimated value is shown.
Are these the real Steam Workshop numbers?
ModOrNot stores public Steam Workshop counts from its collection runs. The totals shown here are the latest counts stored in our catalogue; changes over time are calculated from recorded observations, not invented values. They can differ from the live listing until the next collection.
How is the rank computed?
ModOrNot compares tracked active Black Mesa mods by their current stored subscriber totals. Rank #1 has the most subscribers; equal totals share a rank. The rank is calculated when this page loads and can change as counts or the catalogue change.