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Is Ultimate Zombie Defense multiplayer or co-op?

Yes — co-op. Ultimate Zombie Defense is a real-time strategy game released in 2020, 86% positive on Steam (3,188 reviews), with 15 playing right now. $1.99 on Steam.

Co-opSingle-player tooStrategy · Real-time strategy

Team up or face it alone in this top down zombie slaying defense adventure! Featuring up to 4 player online co-op, cleanse the infected wave by wave and…

Steam tags: Action, Casual, Zombies, Online Co-Op, Tower Defense, Strategy, Gore, Adventure

Do you and a friend both own Ultimate Zombie Defense?

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

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

Quick answers

Is Ultimate Zombie Defense co-op?
Yes, Ultimate Zombie Defense supports co-op.
Does Ultimate Zombie Defense have PvP?
Steam does not list PvP for Ultimate Zombie Defense.
How many people play Ultimate Zombie Defense?
About 15 players were in-game when this page was built (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; updated 2026-09-09. Powered by Steam — not affiliated with or endorsed by Valve Corporation.