The Game Census
鋼鉄戦記C21 cover art

鋼鉄戦記C21

CyberStep, Inc. · 2020-10-14

Steam

ActionMassively MultiplayerRPGFree To Play

Modes: Multiplayer, Co-operative, Massively Multiplayer Online (MMO)

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!

鋼鉄戦記C21 is a free-to-play Action, Massively Multiplayer, and RPG game released in 2020, with an estimated 200,000 to 500,000 owners and a Mixed sentiment (68% of 137 reviews).

2
playing now
68%
positive of 137 reviews
Mixed
steam's rating (official)
200,000–500,000
owners (SteamSpy est.)
pending
deck/linux tier (ProtonDB)
Unsupported
Steam Deck (Valve)
SteamOS: Unsupported
Free
steam price (US)

2 players in-game as of 2026-10-15 05:00 UTC (census sample)

Health check

Quiet
  • · 2 players in-game at the last census sample.
  • · 11 reviews in the last 8 weeks (~1/week).
  • · Review velocity up 0% vs the prior 8 weeks.
  • · Current weekly pace is under 5% of the all-time peak week (44 reviews).
  • · Top 34% of 28,023 Action games in the census by review count.

Health tier since 2026-09-01

Review momentum

PositiveNegative
272720202026Week of 2020-10-01: 27 positiveWeek of 2020-10-01: 17 negativeWeek of 2020-11-01: 7 positiveWeek of 2020-11-01: 4 negativeWeek of 2020-12-01: 4 positiveWeek of 2020-12-01: 4 negativeWeek of 2021-01-01: 4 positiveWeek of 2021-01-01: 1 negativeWeek of 2021-02-01: 2 positiveWeek of 2021-03-01: 2 positiveWeek of 2021-03-01: 2 negativeWeek of 2021-04-01: 1 negativeWeek of 2021-06-01: 2 positiveWeek of 2021-07-01: 2 positiveWeek of 2021-08-01: 2 positiveWeek of 2021-08-01: 1 negativeWeek of 2021-09-01: 1 positiveWeek of 2021-10-01: 1 positiveWeek of 2021-11-01: 1 positiveWeek of 2022-02-01: 1 positiveWeek of 2022-03-01: 1 positiveWeek of 2022-04-01: 1 negativeWeek of 2022-07-01: 1 positiveWeek of 2022-08-01: 2 positiveWeek of 2022-09-01: 2 positiveWeek of 2022-09-01: 1 negativeWeek of 2022-10-01: 1 negativeWeek of 2022-12-01: 1 positiveWeek of 2022-12-01: 1 negativeWeek of 2023-01-01: 1 negativeWeek of 2023-02-01: 1 positiveWeek of 2023-03-01: 1 positiveWeek of 2023-03-01: 1 negativeWeek of 2023-05-01: 1 positiveWeek of 2023-05-01: 1 negativeWeek of 2023-09-01: 1 negativeWeek of 2023-10-01: 1 positiveWeek of 2023-11-01: 1 positiveWeek of 2023-12-01: 4 positiveWeek of 2024-01-01: 1 positiveWeek of 2024-01-01: 1 negativeWeek of 2024-03-01: 1 positiveWeek of 2024-04-01: 4 positiveWeek of 2024-05-01: 1 positiveWeek of 2024-09-01: 1 positiveWeek of 2024-12-01: 2 positiveWeek of 2024-12-01: 2 negativeWeek of 2025-01-01: 1 positiveWeek of 2025-02-01: 1 positiveWeek of 2025-03-01: 1 negativeWeek of 2025-04-01: 1 positiveWeek of 2025-05-01: 1 positiveWeek of 2025-08-01: 1 positiveWeek of 2025-09-01: 1 positiveWeek of 2025-11-01: 2 positiveWeek of 2026-01-01: 1 positiveWeek of 2026-02-01: 1 positiveWeek of 2026-04-01: 1 negativeWeek of 2026-05-01: 2 positiveWeek of 2026-05-01: 1 negativeWeek of 2026-06-01: 1 negativeWeek of 2026-07-01: 1 positiveWeek of 2026-08-01: 1 positive
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

1002026-09-15 15:00 — 3 players2026-09-16 23:00 — 0 players2026-09-18 06:00 — 2 players2026-09-19 14:00 — 6 players2026-09-20 21:00 — 1 players2026-09-22 05:00 — 3 players2026-09-23 13:00 — 6 players2026-09-24 20:00 — 1 players2026-09-26 04:00 — 0 players2026-09-27 11:00 — 2 players2026-09-28 19:00 — 2 players2026-09-30 02:00 — 2 players2026-10-01 10:00 — 2 players2026-10-02 17:00 — 1 players2026-10-04 01:00 — 0 players2026-10-05 09:00 — 1 players2026-10-06 16:00 — 2 players2026-10-08 00:00 — 0 players2026-10-09 07:00 — 1 players2026-10-10 15:00 — 3 players2026-10-11 23:00 — 1 players2026-10-13 06:00 — 4 players2026-10-14 14:00 — 0 players2026-10-15 05:00 — 2 players
Concurrent players, hourly average, last 30 days (census samples).
322Oct 2020Aug 2026Oct 2020 — avg 32 · peak 73Dec 2020 — avg 14 · peak 45Feb 2021 — avg 12 · peak 36Apr 2021 — avg 10 · peak 36Jun 2021 — avg 6 · peak 22Aug 2021 — avg 10 · peak 30Oct 2021 — avg 7 · peak 28Dec 2021 — avg 5 · peak 25Feb 2022 — avg 7 · peak 24Apr 2022 — avg 7 · peak 23Jun 2022 — avg 5 · peak 21Aug 2022 — avg 7 · peak 20Oct 2022 — avg 5 · peak 19Dec 2022 — avg 5 · peak 36Feb 2023 — avg 5 · peak 19Apr 2023 — avg 5 · peak 21Jun 2023 — avg 4 · peak 16Aug 2023 — avg 8 · peak 32Oct 2023 — avg 6 · peak 22Dec 2023 — avg 6 · peak 32Feb 2024 — avg 5 · peak 15Apr 2024 — avg 6 · peak 20Jun 2024 — avg 5 · peak 15Aug 2024 — avg 8 · peak 25Oct 2024 — avg 3 · peak 9Dec 2024 — avg 3 · peak 9Feb 2025 — avg 3 · peak 11Apr 2025 — avg 3 · peak 10Apr 2026 — avg 2 · peak 6Jun 2026 — avg 3 · peak 7Aug 2026 — avg 2 · peak 7
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Details

WindowsmacOSMulti-playerMMOPvPOnline PvPCo-opOnline Co-opCross-Platform MultiplayerCaptions availableSteam WorkshopIn-App Purchases

Player tags

3DPvPRPGJRPGMMORPGShooterTradingAction RPGExplorationShoot 'Em Up

Census log

Computed from census-recorded observations only — dates are observation dates.

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Similarity via IGDB.

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