A chaotic co-op horror game for up to 6 players. Scavenge eerie environments, feed your loot to a hungry steam engine, and pass Boomer between teammates in a deadly game of hot potato.
| App ID | 5119440 |
|---|---|
| App type | Demo |
| Parent app | BOOMER 4353060 |
| Developer | Wumbo Workshop LLC |
| Publisher | Wumbo Workshop LLC |
| Release date | 25 August 2026 |
| Release state | released |
| Store page | store.steampowered.com/app/5119440 |
| Last store refresh | 5 hours ago |
Launch options
| # | Executable | Arguments | OS | Description |
|---|---|---|---|---|
| 0 | BOOMER.exe | windows | ||
| 1 | BOOMER.app | macos |
Hourly peaks, UTC. All-time peak covers SteamRaw's recorded history.
Regional prices
All Steam store regions, converted to USD at today's exchange rate, compared with the US price. Lowest is the lowest price SteamRaw has recorded for that region.
Loading regional prices…
Price history, US store (USD)
| Date | Price | Regular | Discount |
|---|---|---|---|
| 11 September 2026 21:03 UTC | Free | Free |
| DLC | AppID | Release | Price |
|---|---|---|---|
| No DLC known for this app. | |||
Branches
| Branch | Build ID | Description | Updated | Password |
|---|---|---|---|---|
| public | 25258242 | 11 September 2026 17:03 UTC |
Depots
| Depot | Name | OS | Size | Download | Public manifest | Notes |
|---|---|---|---|---|---|---|
| 5119441 | windows | 762.81 MB | 258.16 MB | 1287957056286858361 | ||
| 5119442 | macos | 802.58 MB | 275.25 MB | 1436058419373256320 |
A build is one published version of the game's files on a branch. Steam assigns a new build ID every time the developer pushes an update, so this list is the update history of the app. The files inside a build (depot manifests) are only readable with an account that owns the game, which SteamRaw does not have yet, so build contents are not shown.
| Build ID | Branch | Updated | First seen |
|---|---|---|---|
| 25258242 | public | 11 September 2026 17:03 UTC | 13 hours ago |
Every appinfo change SteamRaw has observed, grouped by changelist. Tags, features, languages, builds, depots, prices and any other key Steam publishes. Tracking since at least 11 September 2026 20:59 UTC (estimated from the earliest recorded change; the exact first fetch was not stored).
No changes recorded since SteamRaw first saw this app. Every future PICS change will be listed here.
| Changelist | Apps | Packages | Seen | What changed |
|---|---|---|---|---|
| 38802785 | 1 | 13 hours ago | no key changes captured |
No news for this app.
Full appinfo as delivered by Steam PICS, changenumber 38802785. Also at /api/app/5119440/raw.
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"common": {
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"type": "Demo",
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"clienticns": "b06b33c58d86b4aabfe60bbd846f55e322ace6ae",
"oslist": "windows,macos",
"osarch": "",
"osextended": "macos64",
"releasestate": "released",
"controllertagwizard": "1",
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"supported_languages": {
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"steam_release_date": "1787688537",
"gameid": "5119440",
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"review_score": "7",
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},
"extended": {
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"config": {
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},
"depots": {
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"branches": {
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}