鋼鉄戦記C21

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C21 Steel Battle Chronicles is an Action MMORPG in which you can customize your very own robot to determine how it fights in battle. Become a member of the Neo Angel Force and defeat the nefarious Demon Force to restore peace to the Cosmic Renaissance!

Developer: CyberStep, Inc.
Released: 15 Oct 2020 (2006)
Price: Free to play
Platforms
Steam Deck: Unsupported
Languages: Japanese
Series: Cosmic

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Update posts

0 posts

Posts announcing an update, tagged as patch notes or not

Last 90 days · as of 24 Oct, 19:05 UTC

How this is measured

Posts in a game's official Steam news feed that announce an update: tagged as patch notes by the developer, or plainly about a patch or a released update.

News checked every 30 days. Observed since 24 Oct 2026.

An announcement is not a build. Developers can ship updates without a post, or post about several updates at once.
Untagged posts are recognised from their words, so a few updates are missed and a few other posts may be counted. Tagged posts are marked Patch notes on the Updates tab; recognised ones are marked Update.
Older posts are being read back through each game's history, most played games first, so months before October 2026 fill in over the coming days.

Source: Steam Web API, ISteamNews/GetNewsForApp. Full methodology

Announcements

Update 2025/11/06 Update
6 Nov 2025 · Community Announcements
Update 2025/09/11 Update
11 Sept 2025 · Community Announcements
Update　2025/09/04 Update
4 Sept 2025 · Community Announcements
Update 2025/08/14 Update
14 Aug 2025 · Community Announcements
Update 2025/08/07 Update
7 Aug 2025 · Community Announcements
Update　2025/06/12 Update
12 Jun 2025 · Community Announcements
Update 2025/06/05 Update
5 Jun 2025 · Community Announcements
Update 2025/05/15 Update
15 May 2025 · Community Announcements
Update 2025/05/08 Update
8 May 2025 · Community Announcements
Update 2025/05/01 Update
1 May 2025 · Community Announcements

From the game’s Steam news feed, last checked 24 Oct, 19:05 UTC. An announcement is not a build: games can update without posting. Every public build we saw is on the Builds tab.

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