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Steam News22 September 20259mo ago

v4.1.2: Endgame update

Greetings surveyors! I’m excited to share the most complete version of Periphery Synthetic yet: the Endgame update.

In this update4

Full notes

Full Periphery Synthetic update

Read the full published notes in a cleaner layout. The original post stays linked below.

Repeated intro

Greetings surveyors!

What changed

4 fixes5 additions1 change0 removals
  • Gameplay
  • Balance
  • UI and audio
  • Server
  • Fixes
addedKey featuresUnplugging. This new function allows you to roll the credits of Periphery Synthetic at any time—now with five unique endings! Will you abdicate your duties? be a good surveyor? or align yourself with a major power? This addition of over 500 words and unique choices explores the consequences of your journey.
addedKey featuresEmbryons. This new material adds further depth to the crafting system! Subatomic materials can now be converted between each other using embryons. Excess subatomics are now recycled into embryons to expand your inventory capacity to infinity. Trinkets receive new purpose by allowing them to be recycled into embryons as well.
addedKey featuresMIDI support. The instrument that was exclusively available to the gamepad can now be played with MIDI input. It sounds great on my microKEY Air with a sustain pedal! Beware that the instrument now supports polyphony, which can lead to audio performance issues if too many keys are pressed at once.
addedv4.1.0 changesCore Gameplay Added a new subatomic to collect: Embryons. Added recycling of trinkets into embryons. Added synthesis of baryons and antibaryons using embryons. Converted excess subatomics into embryons from various actions. Preserved embryons across New Seed Plus. Reduced the costs of Aerodynamics subsystem upgrades. Allowed scan guide on finished worlds after the secondary objective is completed.
fixedv4.1.0 changesCore Interface Added MIDI support for the instrument. Added the Disconnect function with five unique endings. Added four new milestones relating to unplugging the apparatus. Added a new screen for viewing, fusing, and splitting subatomics. Moved the Trinkets screen under the Synthesis menu. Added clicking of trinkets to recycle them into embryons. Replaced Trinket Value with Mission Payout on Status screen. Improved visibility of upgrades when using redacted materials. Prevented upgrade available notifications when no longer available. Adjusted formatting of labels and quantities on synthesis screens. Fixed empty locations tables for distillable materials.
changedv4.1.0 changesCore Audio Applied reverb to the instrument.

Periphery Synthetic changes

addedUnplugging. This new function allows you to roll the credits of Periphery Synthetic at any time—now with five unique endings! Will you abdicate your duties? be a good surveyor? or align yourself with a major power? This addition of over 500 words and unique choices explores the consequences of your journey.
addedEmbryons. This new material adds further depth to the crafting system! Subatomic materials can now be converted between each other using embryons. Excess subatomics are now recycled into embryons to expand your inventory capacity to infinity. Trinkets receive new purpose by allowing them to be recycled into embryons as well.
addedMIDI support. The instrument that was exclusively available to the gamepad can now be played with MIDI input. It sounds great on my microKEY Air with a sustain pedal! Beware that the instrument now supports polyphony, which can lead to audio performance issues if too many keys are pressed at once.
addedCore Gameplay Added a new subatomic to collect: Embryons. Added recycling of trinkets into embryons. Added synthesis of baryons and antibaryons using embryons. Converted excess subatomics into embryons from various actions. Preserved embryons across New Seed Plus. Reduced the costs of Aerodynamics subsystem upgrades. Allowed scan guide on finished worlds after the secondary objective is completed.
fixedCore Interface Added MIDI support for the instrument. Added the Disconnect function with five unique endings. Added four new milestones relating to unplugging the apparatus. Added a new screen for viewing, fusing, and splitting subatomics. Moved the Trinkets screen under the Synthesis menu. Added clicking of trinkets to recycle them into embryons. Replaced Trinket Value with Mission Payout on Status screen. Improved visibility of upgrades when using redacted materials. Prevented upgrade available notifications when no longer available. Adjusted formatting of labels and quantities on synthesis screens. Fixed empty locations tables for distillable materials.

I’m excited to share the most complete version of Periphery Synthetic yet: the Endgame update. Finally, you may choose from its multiple endings, stick around with endless crafting, and jam along with support for MIDI devices! Continue reading for a summary of the update’s key features and its full patch notes. Enjoy!

Key features

  • Unplugging. This new function allows you to roll the credits of Periphery Synthetic at any time—now with five unique endings! Will you abdicate your duties? be a good surveyor? or align yourself with a major power? This addition of over 500 words and unique choices explores the consequences of your journey.

  • Embryons. This new material adds further depth to the crafting system! Subatomic materials can now be converted between each other using embryons. Excess subatomics are now recycled into embryons to expand your inventory capacity to infinity. Trinkets receive new purpose by allowing them to be recycled into embryons as well.

  • MIDI support. The instrument that was exclusively available to the gamepad can now be played with MIDI input. It sounds great on my microKEY Air with a sustain pedal! Beware that the instrument now supports polyphony, which can lead to audio performance issues if too many keys are pressed at once.

v4.1.0 changes

  • Core Gameplay

    • Added a new subatomic to collect: Embryons.

    • Added recycling of trinkets into embryons.

    • Added synthesis of baryons and antibaryons using embryons.

    • Converted excess subatomics into embryons from various actions.

    • Preserved embryons across New Seed Plus.

    • Reduced the costs of Aerodynamics subsystem upgrades.

    • Allowed scan guide on finished worlds after the secondary objective is completed.

  • Core Interface

    • Added MIDI support for the instrument.

    • Added the Disconnect function with five unique endings.

    • Added four new milestones relating to unplugging the apparatus.

    • Added a new screen for viewing, fusing, and splitting subatomics.

    • Moved the Trinkets screen under the Synthesis menu.

    • Added clicking of trinkets to recycle them into embryons.

    • Replaced Trinket Value with Mission Payout on Status screen.

    • Improved visibility of upgrades when using redacted materials.

    • Prevented upgrade available notifications when no longer available.

    • Adjusted formatting of labels and quantities on synthesis screens.

    • Fixed empty locations tables for distillable materials.

  • Core Audio

    • Applied reverb to the instrument.

  • Miscellaneous

    • Updated documentation to reflect new features.

v4.1.1 changes

  • Fixed an exception when downgrading subsystems.

  • Fixed an exception when calculating mission payouts.

v4.1.2 changes

  • Fixed persistence of recycled trinkets.

Source

Steam News / 22 September 2025

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