How many people are playing Radioactivity Demo right now?

Radioactivity Demo is app 3434810 on Steam. Player counts appear once the tracker has sampled it.

What is the all-time peak player count of Radioactivity Demo?

0 concurrent players on 12 Sep 2026.

When was Radioactivity Demo released on Steam?

Radioactivity Demo was released on Steam on 18 Apr 2025.

Status

SteamPeaks

Radioactivity Demo

DemoApp ID 3,434,810by Synthetic Mind Corp.Released 18 Apr 2025

WindowsEngine —

View on SteamSteamCompare

App ID3,434,810

Release date18 Apr 2025

Engine—

Install size3.21 GB

TypeDemo

Last update11 Jun 2025

Steam Deck—

DLC0

DeveloperSynthetic Mind Corp.

Changenumber38,807,749

Price—

Packages0

PublisherSynthetic Mind Corp.

SystemsWindows

Followers—

Depots1

Compare this game

Radioactivity Demo

Synthetic Mind Corp.
Released 18 Apr 2025·App 3434810

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 6 hours ago · not a live figure

—of peak

All-time peak

12 Sep 2026

Update cadence · public branch

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PICS live

458 days

Since last public build

11 Jun 2025, 15:47 UTC

—

Median interval

Pattern appears after five builds

Builds in 30 days

0 with patch notes · 0 unannounced

—

Downloaded in 30 days

Quiet · no builds in 30 days

All 1 builds since 2025 · UTC

When Synthetic Mind Corp. ships

Click a cell to filter the builds table

0369121518

Radioactivity Demo Patches · SteamPeaks

1 published · from the developer’s Steam news feed

Patch notes

Latest 3 May 2025, 09:17 UTC

Published	Title	Build
3 May 2025, 09:17 UTC	Radioactivity Onboarding - v0.3.7 Minor updates and changes: · Training center tutorial prompts with keys guide · Improved Geiger counter animations and functionality	—

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

Radioactivity Demo

Builds

All public

Major patches only

Date	Day	Time	Patch title	Build ID	Branch	Depots	Download Δ
11 Jun 2025	Wed	15:47	No patch notes · unannounced build	18827524	public	1	—

public branch · shipped todayother branchwide buildhas patch notes

Showing 1 of 1 builds · Δ is the compressed download for the public branch, available once the depot worker runsLoad older builds