Machine Party v2.1.1

Machine Party v2.1.1 shipped on August 13, 2026, one day after the v2.0 couch co-op update. This is a smaller maintenance patch that adds a useful Custom playlist feature and fixes several issues that emerged with local multiplayer.

This page documents every confirmed change in v2.1.1 based on official Steam sources.

New: Shuffle option for Custom playlists

Custom mode now includes a SHUFFLE toggle in the Playlist UI. When enabled, the game randomly shuffles the order of simulations when the match begins — giving Custom playlists the unpredictability of Arcade without forcing you into a ten-simulation run.

This is useful when your group knows the standard minigame order but wants variety without the full fixed roster. Shuffle respects your Custom minigame selection; it only randomizes the sequence.

Local multiplayer fixes

v2.1.1 includes two fixes specifically for the new Local menu from v2.0:

Achievement registration in Local mode: v2.0 did not save achievements correctly when playing locally on August 12. v2.1.1 fixes this — achievements now register normally in Local, Custom, Original, and Arcade sessions. If you unlocked achievements during a local session on August 12, re-earn them after updating.

Controller-disconnect crash fix: A possible crash caused by a controller disconnecting in the local lobby has been fixed. This affected sessions where a pad lost connection mid-session, potentially ending the run.

Localization corrections

v2.1.1 corrects several localization errors introduced or carried over from earlier builds. The developers did not publish a detailed list of affected languages or strings. All localized pages on this wiki reflect the corrected text where known.

Possible fix for The Filter inputs

The developers also made a change intended to fix unusual input behavior in The Filter that some players experienced after v2.0. This fix is not confirmed — the team said they were unable to reproduce the issue themselves, so players who still notice strange controls in The Filter are encouraged to report it through the official bug report form linked from Steam discussions.

Quick summary

Change	Type
Shuffle for Custom playlists	New feature
Achievement registration in Local mode	Bug fix
Controller-disconnect crash in Local lobby	Bug fix
Localization corrections	Bug fix
The Filter input behavior	Possible fix (unconfirmed)

Relationship to v2.1.2

v2.1.1 was followed one day later by v2.1.2, a hotfix that restored the vessel-insertion intro cutscene for Original mode when running in Local. Both patches are part of the same post-v2.0 maintenance cycle.

Related pages

• Updates hub — full timeline
• Local co-op — using Custom playlists
• Patch v2.0 — what shipped August 12
• Patch v2.1.2 — hotfix details

FAQ

Does v2.1.1 add Arcade mode? No. Arcade mode was added in v1.5 (August 4). v2.1.1 added Shuffle to Custom playlists.

Should I update before playing locally? Yes. v2.1.1 fixes achievement registration and a crash bug in the Local menu. Always use the latest build when hosting.

What is Shuffle in Custom playlists? Shuffle randomizes the order of your selected minigames when a Custom match starts, without changing which games are in the playlist.

Did v2.1.1 fix The Filter input issues? It includes a change intended to fix them, but the developers could not reproduce the issue. Report persistent problems through the official bug form.