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

Is Crusader Kings II multiplayer or co-op?

Yes — online multiplayer. Crusader Kings II is a turn-based & grand strategy game released in 2012, 90% positive on Steam (73,809 reviews), with 1,373 playing right now. Free on Steam.

Online multiplayerSingle-player tooStrategy · Turn-based & grand strategy

Explore one of the defining periods in world history in an experience crafted by the masters of Grand Strategy.

Steam tags: Grand Strategy, Strategy, Medieval, Historical, Political Sim, Simulation, RPG, Sandbox

Do you and a friend both own Crusader Kings II?

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

Compare our libraries Steam store page

Games like Crusader Kings II you can play together

Hearts of Iron IV
Turn-based & grand strategy · 89% positive on Steam (342,150 reviews) · 32,112 playing right now
Sid Meier’s Civilization® VI
Turn-based & grand strategy · 87% positive on Steam (349,920 reviews) · 25,420 playing right now
Stellaris
Turn-based & grand strategy · 86% positive on Steam (185,433 reviews) · 13,727 playing right now
Sid Meier's Civilization® V
Turn-based & grand strategy · 96% positive on Steam (204,265 reviews) · 12,206 playing right now
Europa Universalis IV
Turn-based & grand strategy · 87% positive on Steam (134,436 reviews) · 12,445 playing right now
Sid Meier's Civilization VII
Turn-based & grand strategy · 49% positive on Steam (42,248 reviews) · 5,931 playing right now

Tired of Crusader Kings II? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Crusader Kings II co-op?
Crusader Kings II does not list co-op on Steam; it has Online multiplayer, Single-player too.
Does Crusader Kings II have PvP?
Steam does not list PvP for Crusader Kings II.
How many people play Crusader Kings II?
About 1,373 players were in-game when this page was built (2026-09-08).

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; updated 2026-09-08. Powered by Steam — not affiliated with or endorsed by Valve Corporation.