Grey Goo does not list co-op on Steam; it has Online multiplayer, Single-player too.

Does Grey Goo have PvP?

Steam's store page doesn't flag a PvP category, but Grey Goo is tagged Competitive — it's player-versus-player.

How many people play Grey Goo?

About 5 players were in-game when this page was built (2026-09-09).

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

Multiplayer games › Strategy › Real-time strategy

Is Grey Goo multiplayer or co-op?

Yes — PvP. Grey Goo is a real-time strategy game released in 2015, 68% positive on Steam (4,274 reviews), with 5 playing right now. $29.99 on Steam.

Online multiplayerSingle-player tooStrategy · Real-time strategy

Fight for control of a frontier world. Gather resources, build your base, and command your forces in battle. Survive long enough to unleash your ultimate…

Steam tags: Strategy, RTS, Sci-fi, Multiplayer, Aliens, Base-Building, Great Soundtrack, Singleplayer

Do you and a friend both own Grey Goo?

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

Total War: WARHAMMER III

Real-time strategy · 73% positive on Steam (119,858 reviews) · 16,842 playing right now

Age of Empires II: Definitive Edition

Real-time strategy · 95% positive on Steam (162,462 reviews) · 13,465 playing right now

Age of Empires IV: Anniversary Edition

Real-time strategy · 86% positive on Steam (80,870 reviews) · 7,084 playing right now

Age of Empires III: Definitive Edition

Real-time strategy · 85% positive on Steam (48,342 reviews) · 3,016 playing right now

Foxhole

Real-time strategy · 84% positive on Steam (44,068 reviews) · 2,821 playing right now

STAR WARS™ Empire at War - Gold Pack

Real-time strategy · 98% positive on Steam (39,435 reviews) · 2,818 playing right now

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

Quick answers

Is Grey Goo co-op?: Grey Goo does not list co-op on Steam; it has Online multiplayer, Single-player too.
Does Grey Goo have PvP?: Steam's store page doesn't flag a PvP category, but Grey Goo is tagged Competitive — it's player-versus-player.
How many people play Grey Goo?: About 5 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.