Yes — co-op. Creeper World 4 is a building & crafting game released in 2020, 95% positive on Steam (4,365 reviews), with 203 playing right now. $24.99 on Steam.
The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time…
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: Tower Defense, Wargame, Real Time Tactics, Building, RTS, Space, Strategy, 3D
Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Creeper World 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.
Tired of Creeper World 4? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.
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