Is CastleStorm co-op?

Yes, CastleStorm supports co-op.

Does CastleStorm have PvP?

Steam does not list PvP for CastleStorm.

Do we both need to own CastleStorm to play together?

Not always. CastleStorm supports Steam Remote Play Together: one person who owns it hosts and streams a local session to friends who don't (Steam quotes up to four players, more on a fast connection). For online co-op or PvP, every player needs their own copy.

How many people play CastleStorm?

Player counts were not available when this page was built.

Does CastleStorm have split-screen or local multiplayer?

Yes. Steam lists CastleStorm with shared/split-screen play on one PC — and it supports Remote Play Together, so a friend can join that local session over the internet.

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

Multiplayer games › Strategy › Tower defense

Is CastleStorm multiplayer or co-op?

Yes — co-op, plus local/split-screen. CastleStorm is a tower defense game released in 2013, 89% positive on Steam (1,593 reviews). $9.99 on Steam.

Co-opLocal / split-screenSingle-player tooStrategy · Tower defense

Welcome to the world of CastleStorm, a super genre mashup of 2D physics destruction mashed with tower defense brawler! CastleStorm was born out of the fond…

How CastleStorm plays with friends, according to Steam

Online co-op: Not listed on Steam
Local / split-screen co-op: Not listed on Steam
Online PvP: Not listed on Steam
LAN play: Not listed on Steam
Remote Play Together (one copy, streamed to friends): Yes
Single-player mode: Yes
Shared / split screen: Yes
Controller: Full controller support

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: Indie, Funny, Tower Defense, Destruction, Action, Strategy, Fantasy, Casual

Do you and a friend both own CastleStorm?

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

Or open the Steam store page.

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

Quick answers

Is CastleStorm co-op?: Yes, CastleStorm supports co-op.
Does CastleStorm have PvP?: Steam does not list PvP for CastleStorm.
Do we both need to own CastleStorm to play together?: Not always. CastleStorm supports Steam Remote Play Together: one person who owns it hosts and streams a local session to friends who don't (Steam quotes up to four players, more on a fast connection). For online co-op or PvP, every player needs their own copy.
How many people play CastleStorm?: Player counts were not available when this page was built.
Does CastleStorm have split-screen or local multiplayer?: Yes. Steam lists CastleStorm with shared/split-screen play on one PC — and it supports Remote Play Together, so a friend can join that local session over the internet.

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