Yes — IOSoccer is free to play, so you can install and play it without buying anything.

Is IOSoccer Steam Deck compatible?

Mostly. Valve rates IOSoccer Playable on Steam Deck: it runs, but may need some manual tweaking — a community controller layout, or zooming in on small text.

Can I play IOSoccer on Mac?

Not natively — Steam lists no macOS version of IOSoccer. Mac players would need a cloud gaming service or a Windows compatibility layer.

Does IOSoccer have co-op?

Yes — Steam lists IOSoccer with online co-op.

Is IOSoccer on PC Game Pass?

No — IOSoccer is not on PC Game Pass right now.

IOSoccer

Name: IOSoccer
Brand: IOSoccer Team
Availability: InStock

IOSoccer Team · June 12, 2026 · Football (Soccer), Sports, Multiplayer, Free to Play, Online Co-Op

IOSoccer is free to play — no purchase needed. We track it so you know if that ever changes.

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Very Positive81% · 2,922116playing now

Best price

Free

Get it free on Steam

This game is free to play. Get it on Steam →

Screenshots

IOSoccer price

IOSoccer is free to play — there is no purchase price, on Steam or anywhere else we track. We keep watching it, so if it ever stops being free the price history on this page will show when that happened and what it changed to.

About IOSoccer

✦ AI summary

Master dynamic ball control and creative skill moves in this completely rebuilt third-person soccer sim where mouse and keyboard inputs give you unparalleled dribbling precision. Play flexible matches from casual 1v1 street games to competitive 8v8 league play across community-run tournaments, all 100% free with full customization and dedicated server support.

IOSoccer is a free non-commercial competitive third-person online multiplayer soccer game that offers unparalleled freedom in ball control and gameplay depth. Originally released 15 years ago under the full name International Online Soccer as a Half-Life mod, the game was later ported to the Source Engine and re-released in 2008. Since the last public release, the game’s code has been completely rewritten, new player models created, and countless new gameplay features added.

Features:

Unparalleled freedom in ball control and gameplay depth: The combination of a third-person camera together with mouse and keyboard input gives you full control over your dribbling, shooting, and passing.

Skill moves: Show your mastery of the game with bicycle kicks, diving headers, ball flicks, and precision dribbling.

Flexible team sizes: Whether you prefer 4v4 street games or our standard 8v8 matchups, we support everything from 1 to 11 players per side.

AI and human goalkeepers: You can let the server control the keeper or take its position yourself on the fly.

Public matches: Join and leave public servers with casual matches whenever you want to.

Competitive matches: Participate with your club, national team or mix team in leagues and cups organized by the community.

Dedicated servers: Use our official dedicated servers or rent your own one from a hoster of your choice.

Player customization: Set your shirt name, pick your shirt number and choose your ethnicity, hair style, shoes, keeper gloves, ball, and sleeve length.

Instant replays and highlights: Watch goals again from the TV camera's perspective right after they happened and use intermissions to catch up on chances you missed.

Goal celebrations: Choreograph your team's goal celebrations with various animations.

Warm up mode: Practice shots on your own goalkeeper during warm up before the match where every player has their own ball.

Custom assets: Make your own maps, team kits, balls, shoes, and keeper gloves.

100% free: No microtransactions or any other hidden costs.

IOSoccer — game info

Platforms: Windows, Linux / SteamOS
Steam Deck: Playable
Player modes: Online PvP, Online co-op
PC Game Pass: Not included

More games like this:Linux games

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

IOSoccer is a Source-based soccer game that players appreciate for its unique gameplay style, with some calling it a great experience. However, the main complaints center around a lack of active players and the frustration of teammates who don't pass, making it difficult to find populated public matches. Players seem to enjoy what the game offers mechanically, though the small community makes consistent enjoyable sessions hard to find.

Recommended Aug 17, 2026

i miss that kind of misery

3 found this helpful

Recommended Sep 2, 2026

Especially so because it is made from the Source SDK. 10/10

2 found this helpful

Not recommended Aug 30, 2026

crazy ♥♥♥♥ bro

2 found this helpful

Not recommended Sep 20, 2026

no one passes no public games

1 found this helpful

Recommended Sep 2, 2026

Great GAME !!

1 found this helpful

Recommended Aug 20, 2026

good game

1 found this helpful

Community reviews

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0 reviews

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