Is Serious Sam 4 co-op?

Yes, Serious Sam 4 supports co-op.

Does Serious Sam 4 have PvP?

Steam does not list PvP for Serious Sam 4.

Do we both need to own Serious Sam 4 to play together?

Yes. Serious Sam 4 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 Serious Sam 4?

About 145 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 › Co-op shooter

Is Serious Sam 4 multiplayer or co-op?

Yes — co-op. Serious Sam 4 is a co-op shooter game released in 2020, 83% positive on Steam (16,128 reviews), with 145 playing right now. $7.99 on Steam.

Co-opSingle-player tooShooter · Co-op shooter

Serious Sam 4 reignites the classic FPS series in a high-powered prequel loaded with an explosive arsenal, intergalactic carnage, and perfectly timed…

How Serious Sam 4 plays with friends, according to Steam

Online co-op: Yes
Local / split-screen co-op: Not listed on Steam
Online PvP: Not listed on Steam
LAN play: Not listed on Steam
Single-player mode: Yes
Controller: Full controller support
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: Action, Gore, FPS, Co-op, Shooter, Multiplayer, Violent, Adventure

Do you and a friend both own Serious Sam 4?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Serious Sam 4 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 Serious Sam 4 you can play together

PAYDAY 2

Co-op shooter · 90% positive on Steam (663,082 reviews) · 27,254 playing right now

Far Cry® 5

Co-op shooter · 81% positive on Steam (173,477 reviews) · 1,297 playing right now

Tom Clancy's Ghost Recon® Wildlands

Co-op shooter · 80% positive on Steam (96,577 reviews) · 1,441 playing right now

Tom Clancy's Ghost Recon® Breakpoint

Co-op shooter · 73% positive on Steam (32,563 reviews) · 1,430 playing right now

One-armed robber

Co-op shooter · 91% positive on Steam (38,728 reviews) · 786 playing right now

PAYDAY 3

Co-op shooter · 43% positive on Steam (58,692 reviews) · 644 playing right now

Tired of Serious Sam 4? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Serious Sam 4 co-op?: Yes, Serious Sam 4 supports co-op.
Does Serious Sam 4 have PvP?: Steam does not list PvP for Serious Sam 4.
Do we both need to own Serious Sam 4 to play together?: Yes. Serious Sam 4 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 Serious Sam 4?: About 145 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