How many people are playing Project Prison: Prologue Playtest right now?

Project Prison: Prologue Playtest is app 4425730 on Steam. Player counts appear once the tracker has sampled it.

What is the all-time peak player count of Project Prison: Prologue Playtest?

0 concurrent players on 4 Oct 2026.

When was Project Prison: Prologue Playtest released on Steam?

Project Prison: Prologue Playtest was released on Steam on 7 Apr 2026.

Status

SteamPeaks

Project Prison: Prologue Playtest

BetaApp ID 4,425,730Released 7 Apr 2026

Playing now

All-time peak

20:21 UTC · 16 Oct 2026steampeaks.com

—Engine —

View on SteamSteamCompare

App ID4,425,730

Release date7 Apr 2026

Engine—

Install size4.53 GB

TypeBeta

Last update27 Sep 2026

Steam Deck—

DLC0

Developer—

Changenumber39,239,259

Price—

Packages0

Publisher—

Systems—

Followers—

Depots1

Compare this game

Project Prison: Prologue Playtest

Released 7 Apr 2026·App 4425730

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

Last seen

Sampled 53 minutes ago · not a live figure

—of peak

All-time peak

4 Oct 2026

Update cadence · public branch

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PICS live

19 days

Since last public build

27 Sep 2026, 07:48 UTC

5 days

Median interval

Pattern appears after five builds

Builds in 30 days

0 with patch notes · 2 unannounced

—

Downloaded in 30 days

Not quiet · on schedule

All 2 builds since 2026 · UTC

When it ships

Click a cell to filter the builds table

0369121518

Project Prison: Prologue Playtest Patches · SteamPeaks

1 published · from the developer’s Steam news feed

Patch notes

Latest 1 May 2026, 14:08 UTC

Published	Title	Build
1 May 2026, 14:08 UTC	V 2.96 Added a song in my honor. · Added a toilet, vending machine, and a couple of beds to the stash room for gang members to use. · Chemistry UI now shows an unknown result (x + y = ???). · No automated price in the trade panel while selling. · You can't sell to gang members anymore — if you try, they might attack you. · Break-even cost is now reflected in the trade panel. · Tackling has been disabl…	—

major updatenotes reach back further than our build history, which starts when SteamPeaks began watching the app

Project Prison: Prologue Playtest

Builds

All public

Major patches only

Date	Day	Time	Patch title	Build ID	Branch	Depots	Download Δ
27 Sep 2026	Sun	07:48	No patch notes · unannounced build	25557452	public	1	—
22 Sep 2026	Tue	13:57	No patch notes · unannounced build	25460623	public	1	—

public branch · shipped todayother branchwide buildhas patch notes

Showing 2 of 2 builds · Δ is the compressed download for the public branch, available once the depot worker runsLoad older builds