How many people are playing Lost Arsenal Playtest right now?

Lost Arsenal Playtest has 3 players on Steam right now, with a 24-hour peak of 14 and an all-time peak of 22 on 20 Sep 2026.

What is the all-time peak player count of Lost Arsenal Playtest?

22 concurrent players on 20 Sep 2026.

When was Lost Arsenal Playtest released on Steam?

Lost Arsenal Playtest was released on Steam on 3 Jul 2026.

Status

SteamPeaks

Lost Arsenal Playtest

BetaApp ID 4,894,660by Marginal ErrorReleased 3 Jul 2026

Playing now

All-time peak

09:48 UTC · 22 Sep 2026steampeaks.com

—Engine —

View on SteamSteamCompare

App ID4,894,660

Release date3 Jul 2026

Engine—

Install size1.96 GB

TypeBeta

Last update21 Sep 2026

Steam Deck—

DLC0

DeveloperMarginal Error

Changenumber39,070,821

Price—

Packages0

Publisher—

Systems—

Followers—

Depots1

Compare this game

Lost Arsenal Playtest

Marginal Error
Released 3 Jul 2026·App 4894660

Steam user reviews

Not enough reviews yet

0 so far · summary at 10

SteamPeaks Rating

Not enough reviews yet

Rated from 10 reviews

How it works

Playing now

−2 vs. yesterday

14%of peak

All-time peak

20 Sep 2026

Update cadence · public branch

RSS Follow on Discord Add alert

PICS live

0 days

Since last public build

21 Sep 2026, 18:14 UTC

2 days

Median interval

Usually Sun, 12:00–14:00 UTC

Builds in 30 days

0 with patch notes · 4 unannounced

—

Downloaded in 30 days

Not quiet · on schedule

All 5 builds since 2026 · UTC

When Marginal Error ships

Click a cell to filter the builds table

036912151821

Lost Arsenal Playtest Patches · SteamPeaks

Lost Arsenal Playtest

Builds

All public

Major patches only

Date	Day	Time	Patch title	Build ID	Branch	Depots	Download Δ
21 Sep 2026new	Mon	18:14	No patch notes · unannounced build	25442812	public	1	—
20 Sep 2026	Sun	17:23	No patch notes · unannounced build	25423015	public	1	—
20 Sep 2026	Sun	16:44	No patch notes · unannounced build	25422459	public	1	—
18 Sep 2026	Fri	12:39	No patch notes · unannounced build	25390191	public	1	—
15 Aug 2026	Sat	20:12	No patch notes · unannounced build	24754675	public	1	—

public branch · shipped todayother branchwide buildhas patch notes

Showing 5 of 5 builds · Δ is the compressed download for the public branch, available once the depot worker runsLoad older builds

Lost Arsenal Playtest

When Marginal Error ships

Lost Arsenal Playtest

When Marginal Error ships

Patch notes

Builds