How many people are playing Alien Swarm right now?

Alien Swarm has 21 players on Steam right now, with a 24-hour peak of 34 and an all-time peak of 7,857 on Jul 2019.

What is the all-time peak player count of Alien Swarm?

7,857 concurrent players on Jul 2019.

When was Alien Swarm released on Steam?

Alien Swarm was released on Steam on 19 Jul 2010.

Alien Swarm Install Size

25,900,121 on Steam▼ 6,006,719 6,360,453 in-gameTop now Counter-Strike 2 611,139PICS #38,661,042819 builds todaySale Steam PvE Survival Crafting Festends 7 Sep Sampled 7 Sep 2026, 08:28 UTC

SteamPeaks25.9M

Alien Swarm Install Size · SteamPeaks

Patch Ledger

Install size over time

Patch Ledger How this is computedComputed 5 hours ago

Install now

2.00 GBuncompressed

default install · build 5587483

Fresh download

1.26 GBcompressed

what a new default install fetches

Last change

—

first measured build

Builds measured

since 7 Sep 2026

Install size per public build · uncompressed bytes, 1 GB = 1,073,741,824 bytes · axis starts at the smallest measured build

One build measured so far; the line appears with the second.

Date · build	Install	Files	Install ±	Download	Efficiency	Note
24 Sep 2020build 5587483	2.00 GB	first read · 4,690 files	—	—	63% · downloaded 1.26 GB to change 2.00 GB	—

Measured from the 1 manifests the account has read, since it gained Alien Swarm on 7 Sep 2026. Install bytes are the uncompressed file sizes of the default install (Windows, base game, English); depots behind DLC or keys, other languages and low-violence variants are counted apart and shown under every depot. Download and fresh-download bytes are compressed chunk lengths; the two are never added together. Efficiency is a patch’s download divided by the bytes it rewrote on disk. Export CSV · Data by SteamPeaks.com.

Alien Swarm

Install size over time

Updates with no note

Shares files with