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Periphery Synthetic News

v4.1.4: Side E progress update

[p]Greetings surveyors![/p][p]Recently I’ve hinted that I’m focusing on the final expansion for Periphery Synthetic. I’m excited to immediately release a handful of improvements that were developed alongside it. Continue reading for exclusive screenshots and details about Side E—as well as the full patch notes.[/p][p][/p][h2]The final expansion[/h2]
[p]Beware! The price of Periphery Synthetic will increase by $1 USD when Side E is released. It will be a free update for all existing players.[/p]
[p]Side E introduces a challenging new world: Alpha Periphery D3. Its objective is to provide contrast to the existing worlds of Periphery Synthetic. The result is an airless moon with a defining environmental feature.[/p][p][/p][p][/p][h3]The lava labyrinth[/h3][p]Its dynamic lava—which oscillates in altitude like clockwork—is the focal point of its challenges. At its lowest, surveyors may descend into vertical calderas to retrieve and escape with their artifacts. Yet at its highest, only the tallest mountains peak out like islands in the lava. Between those extremes exists a timed puzzle of submerging and reemerging terrain.[/p][p]Its effects are not limited to the terrain, but instead try to find a situational mechanical cohesion. When the lava is nearby, the haze of volcanic ash provides a thin atmosphere to recharge thrusters and distill materials. Yet resources are more scarce above this haze, with only a smattering of trinkets to collect and recycle. This provides an added tension of resource management not found in the other worlds.[/p][p][/p][p][/p][h3]The creation myth[/h3][p]My earliest concepts of Alpha Periphery D3 date back to my first handwritten notes about the EP. Two years later, I had finally built its first prototype in July 2024, but had abandoned it to focus on the Side D expansion. Revisiting this unfinished world and applying the final touches over a year later reminds me of how good it feels to finish things![/p][p]It’s also a great opportunity to explore themes of inspiration, authorship, and closure. In the Side D expansion, I introduced a new character who is the author of the Alpha Periphery system. However, they lacked a certain complexity that is now relevant to explore across fifteen new perceptions.[/p][p][/p][p][/p][h3]The simpler approach[/h3][p]My approach toward developing this expansion has been quite streamlined due to its more limited scope. Unlike the Side D expansion, it doesn’t aim to add new abilities or completely overhaul movement or the economy. Instead, it intends to provide closure to the EP’s existing systems.[/p][p]This approach has allowed me to develop it in parallel to more regular updates. For instance, I’ve made a habit of cherry-picking everything-except-the-new-world from the expansion into the public branch as well. These include the recent additions of embryons, recycling trinkets, choosing from multiple endings—as well as everything in today’s patch.[/p][p][/p][h3]The next steps[/h3][p]I’m excited to announce the title and release date for Side E soon.[/p][p]In the meantime, I’ll be wrapping up its music to share in an exclusive new build for MDEV 2025. After that, my focus will shift to writing the new perceptions coming in the full release. I hope to have it ready for you by the end of the year.[/p][p]Thanks for playing![/p][p][/p][h2]v4.1.4 changes[/h2]
  • [p]Added a button to recycle all trinkets to the Trinkets screen.[/p]
  • [p]Prevented repeat keyboard events on the Trinkets screen.[/p]
  • [p]Improved navigation between levels on the Trinkets screen.[/p]
  • [p]Balanced criteria and bonuses for certain trinkets.[/p]
  • [p]Used musical frequencies for trinket sounds.[/p]
  • [p]Reduced the number of caches needed for the Cache Buster milestone.[/p]
  • [p]Fixed a broken cache reward on Alpha Periphery D2.[/p]
  • [p]Improved gain calculation and positioning of environmental sounds.[/p]
  • [p]Improved consistency of sound channel routing.[/p]

v4.1.3: Quality of life improvements

[p]Greetings surveyors![/p][p]This release adds some quality of life improvements based on your feedback since the expansion release. [/p][p]Enjoy![/p][p][/p][h2]v4.1.3 changes[/h2]
  • [p]Replaced trinkets with caches in place of artifacts on fully-explored worlds.[/p]
  • [p]Removed some audio occlusion when vertical look is toggled off.[/p]
  • [p]Added slider for Instrument Polyphony to Audio Performance screen.[/p]
  • [p]Added slider for Keyboard Turn Speed to the Controls screen.[/p]
  • [p]Added quick navigation of the Materials screen with left/right/previous/next keys.[/p]
  • [p]Fixed audio for interface sliders not working since v4.1.0.[/p]
  • [p]Played an audio notification based on your progress when unplugging.[/p]
  • [p]Fixed button focus indicators using world color scheme when unplugging.[/p]
  • [p]Fixed a performance issue with the MIDI instrument.[/p]

v4.1.2: Endgame update

[p]Greetings surveyors![/p][p]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!
[/p][h2]Key features[/h2]
  • [p]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.[/p]
  • [p]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.[/p]
  • [p]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.[/p]
[h2]v4.1.0 changes[/h2]
  • [p]Core Gameplay[/p]
    • [p]Added a new subatomic to collect: Embryons.[/p]
    • [p]Added recycling of trinkets into embryons.[/p]
    • [p]Added synthesis of baryons and antibaryons using embryons.[/p]
    • [p]Converted excess subatomics into embryons from various actions.[/p]
    • [p]Preserved embryons across New Seed Plus.[/p]
    • [p]Reduced the costs of Aerodynamics subsystem upgrades.[/p]
    • [p]Allowed scan guide on finished worlds after the secondary objective is completed.[/p]
  • [p]Core Interface[/p]
    • [p]Added MIDI support for the instrument.[/p]
    • [p]Added the Disconnect function with five unique endings.[/p]
    • [p]Added four new milestones relating to unplugging the apparatus.[/p]
    • [p]Added a new screen for viewing, fusing, and splitting subatomics.[/p]
    • [p]Moved the Trinkets screen under the Synthesis menu.[/p]
    • [p]Added clicking of trinkets to recycle them into embryons.[/p]
    • [p]Replaced Trinket Value with Mission Payout on Status screen.[/p]
    • [p]Improved visibility of upgrades when using redacted materials.[/p]
    • [p]Prevented upgrade available notifications when no longer available.[/p]
    • [p]Adjusted formatting of labels and quantities on synthesis screens.[/p]
    • [p]Fixed empty locations tables for distillable materials.[/p]
  • [p]Core Audio[/p]
    • [p]Applied reverb to the instrument.[/p]
  • [p]Miscellaneous[/p]
    • [p]Updated documentation to reflect new features.[/p]
[h2]v4.1.1 changes[/h2]
  • [p]Fixed an exception when downgrading subsystems.[/p]
  • [p]Fixed an exception when calculating mission payouts.[/p]
[h2]v4.1.2 changes[/h2]
  • [p]Fixed persistence of recycled trinkets.[/p]

v4.0.3: Expansion release hotfix

[p]Greetings surveyors![/p][p]Thank you all for a fun and successful release weekend. This release addresses your feedback, as well as a few things that I noticed in my most recent livestream. Enjoy![/p][p][/p][h2]v4.0.1 changes[/h2]
  • [p]Reduced the costs of Scanners subsystem upgrades.[/p]
  • [p]Improved how the Ballasts subsystem behaves at lower levels.[/p]
  • [p]Fixed unintentional bunnyhopping when jump control is not held.[/p]
  • [p]Prevented the Invested milestone from unlocking too early.[/p]
  • [p]Increased the volume of some quieter sounds.[/p]
  • [p]Fixed the recharge sound for Mulligans subsystem not always firing.[/p]
  • [p]Improved sun color calculations in low-atmosphere environments.[/p]
  • [p]Improved how destinations/milestones/perceptions/trinkets are marked as read.[/p]
  • [p]Adjusted some interface labels.[/p]
[p][/p][h2]v4.0.2 changes[/h2]
  • [p]Fixed a hard lock on the Trinkets screen when pressing the back button.[/p]
[p][/p][h2]v4.0.3 changes[/h2]
  • [p]Fixed world completion milestones gained too early.[/p]

Wards of Andromeda launches

[p]Greetings surveyors![/p][p]I’m excited to announce that Periphery Synthetic has expanded with Wards of Andromeda! After more than a year of development, it nearly doubles the size of the EP. Explore two new worlds, synthesize new gliding and crafting abilities, and uncover a deeper past in this free content update for all players.[/p][p][/p]
[p]Need more details? Please check out the Wards of Andromeda reveal for the release trailer, screenshots, and summaries of key changes.[/p]
[p][/p][p]If this is your first time hearing of Periphery Synthetic, then this is the perfect time to jump in! The expansion offers a richer experience with more ways to complete your unique playthrough.[/p][p]For existing players, it is not required to start a new game. To access the new content, you may activate and follow your scanners. However, due to these major changes, it is recommended to start a new game (or new game plus) to experience the EP as intended. Along your expanded journey, you may likely spot its 100+ new features, enhancements, and fixes.[/p][p]Enjoy![/p][p][/p][h2]v4.0.0 changes[/h2][p][/p]
[p]Beware! The price of Periphery Synthetic has increased from $3 to $5 USD to reflect these additions to the EP.[/p]
[p][/p]
  • [p]Side D Release[/p]
    • [p]Added new explorable worlds: Alpha Periphery D2 and The Interstice.[/p]
    • [p]Added a new xenotechnology to collect.[/p]
    • [p]Added Aerodynamics system for improving speed and control during flight.[/p]
    • [p]Added Synthesis system for creating and destroying materials and systems.[/p]
    • [p]Added Baryonic Hold and Antibaryonic Hold subsystems for storing particles.[/p]
    • [p]Added text for 27 new perceptions to reveal.[/p]
    • [p]Added preset for Alpha Periphery D2 to cover screen.[/p]
  • [p]Core Gameplay[/p]
    • [p]Added unlockable gliding mechanics which activate during flight.[/p]
    • [p]Added unlockable navigational assistance which activates within caves.[/p]
    • [p]Added automatic fission of collected materials when inventory is exceeded.[/p]
    • [p]Added critical successes for fission, fusion, and system downgrades.[/p]
    • [p]Added subatomic particles to cache rewards.[/p]
    • [p]Renamed Ballasts system to Aquatics for general swimming upgrades.[/p]
    • [p]Added Hydroplanes subsystem for the Aquatics to improve swim handling.[/p]
    • [p]Added Scanners subsystem to the Core for increasing scan guide range.[/p]
    • [p]Added Shocks subsystem for the Wheels for increasing bounce height.[/p]
    • [p]Added Spelunkers subsystem for the Aquatics for cave navigation assistance.[/p]
    • [p]Added Stabilizers subsystem for the RCS to stop turning automatically.[/p]
    • [p]Added Axes +4 and +5 subsystem upgrades.[/p]
    • [p]Added Cargo Racks +4 subsystem upgrade.[/p]
    • [p]Added Mulligans +4 subsystem upgrade.[/p]
    • [p]Added Reducers +8 and +9 subsystem upgrades.[/p]
    • [p]Rebalanced material costs to reflect the new economy.[/p]
    • [p]Increased the maximum range and sensitivity of the scanner guide.[/p]
    • [p]Prevented the scanner guide from working once worlds are completed.[/p]
    • [p]Applied Axes upgrade to backward movement while driving.[/p]
    • [p]Reduced the base capacity and recharge rate for the thrusters.[/p]
    • [p]Removed hard collisions during flight.[/p]
    • [p]Allowed thrusters to climb surfaces while ignoring collisions.[/p]
    • [p]Allowed jumps to be canceled by moving down or changing modes.[/p]
    • [p]Always land when colliding during flight while in bipedal mode.[/p]
    • [p]Always bounce when colliding during flight while in wheeled mode.[/p]
    • [p]Improved how the speed limit is enforced during flight.[/p]
    • [p]Improved bunnyhopping and its cohesion with other flight abilities.[/p]
    • [p]Improved drifting and its cohesion with other driving abilities.[/p]
    • [p]Increased the timer for bunnyhopping and firing Mulligans.[/p]
    • [p]Removed hard collisions against sea floors.[/p]
    • [p]Prevented going airborne when driving while controls are pressed.[/p]
    • [p]Applied brakes only when explicitly braking or suddenly changing direction.[/p]
    • [p]Increased the base intake rate for the distillery.[/p]
    • [p]Allowed distillation of xenotechnologies.[/p]
    • [p]Glued caches to dynamic terrain to prevent soft progress locks.[/p]
    • [p]Prevented xenotech from spawning near world origins.[/p]
  • [p]Core Interface[/p]
    • [p]Added slider for adjusting the interface scale to the Graphics screen.[/p]
    • [p]Increased the default interface scale on Steam Deck.[/p]
    • [p]Improved interface scaling in windowed and smaller resolutions.[/p]
    • [p]Added Subatomics screen for browsing the subatomic particle storage.[/p]
    • [p]Added Downgrade button to individual System and Subsystem screens.[/p]
    • [p]Added Fuse and Split buttons to individual material screens.[/p]
    • [p]Added label for maximum level and completed objectives on the Status screen.[/p]
    • [p]Added haptics for the new mechanics.[/p]
    • [p]Allowed locations to be clicked to view destinations on the Material screen.[/p]
    • [p]Prioritized the Core system when sorting the Systems screen.[/p]
    • [p]Required new destinations to be clicked to remove unread status.[/p]
    • [p]Improved how milestones, perceptions, and trinkets remove unread status.[/p]
    • [p]Improved mouse acceleration and smoothing.[/p]
    • [p]Improved visual contrast of focused table rows.[/p]
    • [p]Improved screen reader behavior on various screens.[/p]
    • [p]Improved maximum and redacted label styles.[/p]
    • [p]Worked around Chromium bug #356548151.[/p]
  • [p]Core Audio[/p]
    • [p]Added sounds for the new mechanics.[/p]
    • [p]Improved bouncing sounds.[/p]
    • [p]Improved how the Reactors respond to difficult terrain.[/p]
    • [p]Throttled expensive movement-related sounds.[/p]
    • [p]Prevented the Repulsors from sounding when not moving.[/p]
  • [p]Core Graphics[/p]
    • [p]Revised the cover screen.[/p]
    • [p]Added bubble particles when underwater.[/p]
    • [p]Animated terrain offsets during the scanning sequence.[/p]
    • [p]Improved camera transitions around liquid surfaces.[/p]
    • [p]Correlated cave reveal speed with Spelunkers subsystem level.[/p]
  • [p]Alpha Periphery B[/p]
    • [p]Added a new perception that will automatically collect.[/p]
    • [p]Added a new perception for world completion.[/p]
    • [p]Added Alpha Periphery D2 to the sky.[/p]
    • [p]Renamed the Landing Site to the Embryonic Crater.[/p]
    • [p]Improved distance modeling of ambient sand sounds.[/p]
    • [p]Increased gravity to 75% of Earth’s.[/p]
    • [p]Added alternative ways to gain certain perceptions in Prototype Mode.[/p]
  • [p]Alpha Periphery C[/p]
    • [p]Added a new perception for world completion.[/p]
    • [p]Added Alpha Periphery D2 to the sky.[/p]
    • [p]Added two new distillable materials.[/p]
    • [p]Increased underwater music reactivity.[/p]
    • [p]Improved cave sound placement.[/p]
    • [p]Improved cave scan sound sequence.[/p]
    • [p]Doubled chance of xenotech inside caves.[/p]
    • [p]Reduced gravity to 50% of Earth’s.[/p]
    • [p]Fixed an audio performance leak when inside caves.[/p]
  • [p]Alpha Periphery C2[/p]
    • [p]Added a new perception for world completion.[/p]
    • [p]Added two new distillable materials.[/p]
    • [p]Increased music reactivity.[/p]
    • [p]Increased gravity to 33% of Earth’s.[/p]
  • [p]Manual[/p]
    • [p]Updated documentation to reflect new features.[/p]
    • [p]Added support for dark mode.[/p]
  • [p]Miscellaneous[/p]
    • [p]Upgraded desktop builds to Electron 37.[/p]