Is 鋼鉄戦記C21 co-op?

Yes, 鋼鉄戦記C21 supports co-op.

Does 鋼鉄戦記C21 have PvP?

Yes, 鋼鉄戦記C21 has player-versus-player modes.

Do we both need to own 鋼鉄戦記C21 to play together?

Yes. 鋼鉄戦記C21 is played online, so each player needs their own copy on their own Steam account (or PC Game Pass where it is offered). Steam Families can share a library, but two people cannot play the same shared game at the same time.

How many people play 鋼鉄戦記C21?

About 3 players were in-game when this page's data was last refreshed (2026-09-09).

Ready Up — what game do we play?Compare two Steam libraries →

Multiplayer games › Shooter › Looter shooter

Is 鋼鉄戦記C21 multiplayer or co-op?

Yes — co-op and PvP. 鋼鉄戦記C21 is a looter shooter game released in 2020, 67% positive on Steam (124 reviews), with 3 playing right now. Free on Steam.

Co-opPvPShooter · Looter shooter

C21 Steel Battle Chronicles is an Action MMORPG in which you can customize your very own robot to determine…

How 鋼鉄戦記C21 plays with friends, according to Steam

Online co-op: Yes
Local / split-screen co-op: Not listed on Steam
Online PvP: Yes
LAN play: Not listed on Steam
Cross-platform multiplayer (Windows / Mac / Linux): Yes
MMO: Yes
Mods: Steam Workshop

Steam's own category list for the game, as of 2026-09-09. "Not listed" means the store page does not claim that mode; community mods or Remote Play can still add it.

Steam tags: JRPG, Looter Shooter, Third-Person Shooter, Spectacle fighter, Shoot 'Em Up, Trading, Exploration, PvP

Do you and a friend both own 鋼鉄戦記C21?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether 鋼鉄戦記C21 is one of them — then helps you pick tonight's game with a weighted roll or a bracket.

Or open the Steam store page.

Games like 鋼鉄戦記C21 you can play together

Warframe

Looter shooter · 87% positive on Steam (626,503 reviews) · 36,195 playing right now

Destiny 2

Looter shooter · 80% positive on Steam (625,616 reviews) · 24,619 playing right now

Borderlands 2

Looter shooter · 92% positive on Steam (295,218 reviews) · 8,551 playing right now

Tom Clancy’s The Division® 2

Looter shooter · 76% positive on Steam (22,368 reviews) · 9,481 playing right now

Risk of Rain 2

Looter shooter · 93% positive on Steam (313,577 reviews) · 7,902 playing right now

Borderlands 3

Looter shooter · 84% positive on Steam (149,065 reviews) · 3,164 playing right now

Tired of 鋼鉄戦記C21? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is 鋼鉄戦記C21 co-op?: Yes, 鋼鉄戦記C21 supports co-op.
Does 鋼鉄戦記C21 have PvP?: Yes, 鋼鉄戦記C21 has player-versus-player modes.
Do we both need to own 鋼鉄戦記C21 to play together?: Yes. 鋼鉄戦記C21 is played online, so each player needs their own copy on their own Steam account (or PC Game Pass where it is offered). Steam Families can share a library, but two people cannot play the same shared game at the same time.
How many people play 鋼鉄戦記C21?: About 3 players were in-game when this page's data was last refreshed (2026-09-09).

Ready Up is a free tool: enter two Steam usernames and it lists the multiplayer games you both own, runs a bracket to pick one, and suggests new co-op games that fit how you both play. Ratings, tags and player counts from Steam and SteamSpy; page updated 2026-09-23. Powered by Steam — not affiliated with or endorsed by Valve Corporation or Microsoft. Ready Up is a Somebody Decide program. How the data works · Legal & privacy · All types · Game Pass