Coming Dec 10, 2026

Petri Party

By Next Best Games

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Petri Party is a game tagged Local Co-Op, Party Game and Co-op by Next Best Games, launching on Steam on Dec 10, 2026. That is a quiet week for games like it, with 13 similar games launching the same week. The quietest week ahead for games like it starts Nov 23. The Steam games most like it include PiPu Party, Let's Dye Together and Somewhere Else.

Petri Party is a frantic, physics-driven party platformer where disposable slimes battle it out across a playful laboratory micro-world. Grab a friend (or seventeen), pick your weapon, and dive into fast, high-skill rounds full of grappling, wall-walking and gloriously accidental victories.

From the Steam page

Busiest weeks for games like this one in the next 12 weeks:

Week of Oct 26, 2026 — Packed, 91 similar games
Week of Nov 9, 2026 — Packed, 52 similar games
Week of Nov 2, 2026 — Busy, 41 similar games

Quietest: Nov 23, Dec 7, Jan 11.

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HavenCraft Wed, Dec 9 · 1,897 followers
Edenfall: Legacy of the First Wardens Tue, Dec 8 · 1,819 followers
Mik Mon, Dec 7 · 1,792 followers
4:AM Thu, Dec 10 · 1,187 followers
Auto Immune Mon, Dec 7 · 1,082 followers
Rebirth of Arcadia Tue, Dec 8 · 300 followers

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<a href="https://launchrivals.com/games/4215680-petri-party"><img src="https://launchrivals.com/games/4215680/badge.png" alt="Petri Party launch date" width="320" height="84"></a>

<a href="https://launchrivals.com/games/4215680-petri-party"><img src="https://launchrivals.com/games/4215680/badge.png?theme=light" alt="Petri Party launch date" width="320" height="84"></a>

PiPu Party 62% match · Local Co-Op, Party Game, Co-op
Let's Dye Together 58% match · Local Co-Op, Party Game, 2D Platformer
Somewhere Else 58% match · Local Co-Op, Co-op, 2D Platformer
Rectangle Dudes 57% match · Local Co-Op, Party Game, Co-op
Super Head Ball 55% match · Party Game, Arena Shooter, 2D Platformer
Hellcrackers 55% match · Local Co-Op, Party Game, Co-op
TTM 54% match · Local Co-Op, Party Game, Co-op
Animals League Unite 54% match · Local Co-Op, Party Game, Co-op
STRIKEM 54% match · Co-op, Arena Shooter, 2D Platformer
Koloro 53% match · Local Co-Op, Co-op, 2D Platformer

Steam data

Everything Steam lists for Petri Party · record updated 2 days ago

Steam store

Overview

App ID4215680

Release dateDec 10, 2026

Last change number40065783

Last record update2 days ago

App type: Game
Developer: Next Best Games
Publisher: Next Best Games

Windows 64-bit

Controller: Full support

Single-playerShared/split screen PvPShared/split screen co-opShared/split screenRemote Play TogetherMulti-playerPvPCo-opFull controller supportPlayStation controllersXbox controllersPlayStation controller BluetoothHDR availableFamily Sharing

Data from public Steam pages, updated daily; 5 days of history. LaunchRivals is not affiliated with Valve or Steam.

Petri Party

About Petri Party

Launch window

Also launching the week of Dec 7

Steam data

Overview

App info

Platforms

Features