Followers
—
Reviews
2,539
Very Positive
Players yesterday
3
at the busiest moment
Owners
100K–200K
estimated
Steam data
Everything Steam lists for SEPTEMBER 1999 · record updated 15 hours ago
Overview
App ID952250
Release dateOct 10, 2018
Last change number40163495
Last record update15 hours ago
App info
- App type
- Game
- Developer
- 98DEMAKE
- Publisher
- 98DEMAKE
- Steam profile
- Not counted yet: Steam is still getting to know this game, so it doesn't add to game counts or achievement totals · checked 9 hours ago
Platforms
Windows
macOS
Features
1
Single-player
Patches
Builds
1| Build | Branch | Updated |
|---|---|---|
| 3192098 | public | Oct 8, 2018 |
Packages & DLC
DLCs
1| ID | Name | Price (US) |
|---|---|---|
| 1008400 | Not on the store yet | — |
Depots
Depots
2| ID | Name | Systems | Size | Download | Manifest |
|---|---|---|---|---|---|
| 952251 | — | Windows | 459.9 MB | 177.6 MB | 1767575840716848397 |
| 952252 | — | macOS | 568.1 MB | 211.6 MB | 3104017463283218645 |
Branches
1| Branch | Build | Updated | Access |
|---|---|---|---|
| public | 3192098 | Oct 8, 2018 | Open |
Configuration
Install foldersteamapps/common/SEPTEMBER1999
Launch options
2| Executable | Arguments | Systems | Description |
|---|---|---|---|
| SEPTEMBER1999.exe | Windows | ||
| September1999_mac.app | macOS |
Update history
Changes to the Steam record
since we started watching-
Oct 25, 2026 · 21:48 #40163495
- appid removed
- common.ReleaseState added released
- common.releasestate removed
Data from public Steam pages, updated daily; 1 day of history. Owner counts are estimates. LaunchRivals is not affiliated with Valve or Steam.