鋼鉄戦記C21

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App ID	1266560
App Type	Game
Developer	CyberStep, Inc.
Publisher	CyberStep, Inc.
Franchise	Cosmic, CyberStep
Supported Systems	Windows macOS
Last Changenumber	30597810
Last Record Update	14 August 2025 – 20:26:03 UTC ()
Release Date	15 October 2020 – 04:02:58 UTC ()

❓ 64.01%

126 reviews

In-Game

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!

Additional Information

This game is excluded from Steam Family Sharing because: Free Game

Developer

CyberStep, Inc.

workshop_visible

Yes

DLCAvailableOnStore

Yes

ReleaseState

released

Publisher

CyberStep, Inc.

IsFreeApp

Yes

Exclude from family sharing (exfgls)

3 (Free Game)

Store Release Date

10 March 2006 – 08:00:00 UTC ()

osarch

empty string

community_hub_visible

Yes

Social Media

https://x.com/C21_koutetu

Primary Genre

Action (1)

Store Genres

Action (1), Massively Multiplayer (29), RPG (3), Free to Play (37)

Steam Release Date

15 October 2020 – 04:02:58 UTC ()

Original Release Date

10 March 2006 – 08:00:00 UTC () (1141977600)

Store Asset Modification Time

30 June 2020 – 11:34:13 UTC () (1593516853)

library_assets

library_capsule	ja,en
library_hero	ja,en
library_logo	ja,en
logo_position ↴
pinned_position	BottomLeft
width_pct	34.93559591235173
height_pct	60.375861828298454

osextended

empty string

Is free on the store?

Yes

review_score

review_percentage

Detected Technologies (?)

JVM SDK

Steam Deck Compatibility

Steam Deck:
Valve is still working on adding support for this game on Steam Deck
SteamOS:
Valve is still working on adding support for this game on SteamOS
category: Unsupported
steamos_compatibility: Unsupported
test_timestamp: 24 September 2022 – 00:00:00 UTC
tested_build_id: 5472570

configuration:

supported_input	other
requires_manual_keyboard_invoke	0
requires_non_controller_launcher_nav	0
primary_player_is_controller_slot_0	0
non_deck_display_glyphs	0
small_text	0
requires_internet_for_setup	0
requires_internet_for_singleplayer	0
recommended_runtime	proton-stable
requires_h264	0
requires_voice_files	0
gamescope_frame_limiter_not_supported	0
hdr_support	0

First seen on SteamDB

10 March 2020 – 08:39:16 UTC (), in changelist #7924668

Supported Languages

1 Languages	Interface	Full Audio	Subtitles
Japanese	Yes	Yes	Yes

Assets

Load all asset images

clienticon

db79a96f4fad103dc03cd56ee35f6df524a35e13

clienttga

8ab7def3bd3e25d1b2ac933afab4330be7b16450

icon

5a12c9c619049a21a533dea6cbc58854e161ea7d

logo

c86e3dc369a39780026ea979c49a1d6760a08462

logo_small

c86e3dc369a39780026ea979c49a1d6760a08462_thumb

small_capsule

english	capsule_231x87.jpg
japanese	capsule_231x87_japanese.jpg

header_image

english	header.jpg
japanese	header_japanese.jpg

library_assets_full

library_capsule ↴
image/japanese	library_600x900_japanese.jpg
image/english	library_600x900.jpg
image2x/japanese	library_600x900_japanese_2x.jpg
image2x/english	library_600x900_2x.jpg
library_hero ↴
image/japanese	library_hero_japanese.jpg
image/english	library_hero.jpg
library_logo ↴
image/japanese	logo_japanese.png
image/english	logo.png
image2x/japanese	logo_japanese_2x.png
image2x/english	logo_2x.png
logo_position/pinned_position	BottomLeft
logo_position/width_pct	34.93559591235173
logo_position/height_pct	60.375861828298454

Assets

main_capsule	capsule_616x353.jpg
small_capsule	capsule_231x87.jpg
header	header.jpg
library_capsule	library_600x900.jpg
library_capsule_2x	library_600x900_2x.jpg
library_hero	library_hero.jpg
community_icon	5a12c9c619049a21a533dea6cbc58854e161ea7d.jpg
page_background_path	app/1266560
timestamp	13 February 2025 – 03:34:15 UTC

Trailers

303896 ↴
trailer_name	c21_pv
trailer_category	0
trailer_480p/video/webm	256796058/movie480_vp9.webm
trailer_480p/video/mp4	256796058/movie480.mp4
trailer_max/video/webm	256796058/movie_max_vp9.webm
trailer_max/video/mp4	256796058/movie_max.mp4
microtrailer/video/webm	1266560/303896/b16ec017f403373cb7af05de74ff52af28e81b35/1751211895/microtrailer.webm
microtrailer/video/mp4	1266560/303896/b16ec017f403373cb7af05de74ff52af28e81b35/1751211895/microtrailer.mp4
adaptive_trailers/0/cdn_path	1266560/303896/b16ec017f403373cb7af05de74ff52af28e81b35/1751211895/dash_av1.mpd
adaptive_trailers/0/encoding	dash_av1
adaptive_trailers/1/cdn_path	1266560/303896/b16ec017f403373cb7af05de74ff52af28e81b35/1751211895/dash_h264.mpd
adaptive_trailers/1/encoding	dash_h264
adaptive_trailers/2/cdn_path	1266560/303896/b16ec017f403373cb7af05de74ff52af28e81b35/1751211895/hls_264_master.m3u8
adaptive_trailers/2/encoding	hls_h264
screenshot_medium	256796058/movie.293x165.jpg
screenshot_full	256796058/movie_full.jpg
all_ages	true
is_highlight	true
timestamp	1601515152

Depots

ID	Configuration	Size	DL.
1266561	鋼鉄戦記C21 Content	305.57 MiB	306.03 MiB
1266562	Windows 鋼鉄戦記C21 windows	90.15 MiB	23.96 MiB
1266563	macOS 鋼鉄戦記C21 mac	2.48 MiB	1.32 MiB
1484360	UnusedDLC 1484360C21 Starters Pack (1484360) デポ	No size
1954350	UnusedDLC 1954350C21 Weapon Pack (1954350) デポ	No size

Total size on disk is 398.19 MiB and total download size is 331.32 MiB.

Total size on disk is 395.71 MiB and total download size is 329.99 MiB, when filtered to Windows, English, no DLC depots.

Branches

Name	Description	Build ID	Time Updated
public		5472570	7 September 2020 – 03:08:49 UTC

Other

Name	Value
baselanguages	Japanese
workshopdepot	鋼鉄戦記C21 (1266560)
hasdepotsindlc	0
privatebranches	1

鋼鉄戦記C21

Additional Information

Supported Languages

Tags

Categories

Assets

Depots

Branches

Other