Prologue: Go Wayback! just went free on Steam with its final update

Prologue: Go Wayback! is free to claim on Steam now, and PlayerUnknown Productions says this is the game’s final update. The studio has stopped active development on the survival game and is keeping its smaller team focused on Melba, the terrain tech that powered the project.

The team pointed players to its other tech demo, Preface: Undiscovered World, for anyone who wants to follow that technology path. It is also offering self-refunds for 60 days, through August 17, 2026, with no playtime cap or old-purchase restriction. If you keep the game, you can add it back to your library at no cost now that it is free.

There is also a developer build in Steam’s Game Versions menu. Right-click Prologue: Go Wayback! in the Library, open Properties, then Game Versions & Betas. The build includes a developer menu on the = key, with tools to spawn items, change the time and weather, fly across the map, or teleport to a spot. PlayerUnknown Productions said the game was left unencrypted in Unreal Engine 5, so modding should be possible even though official mod plans never got finished.

If you want more background on how the game evolved during Early Access, the first major update added batteries, weather tools, and other survival systems in an earlier patch.

Patch Notes

The final changelog leans on navigation and survival quality-of-life. Paths and trails now cut through the forest, the Handheld Weather Monitor gives a better read on changing conditions, and Waterproof Spray helps keep clothing and small items dry. PlayerUnknown Productions also called out cooking, lighting, audio, loading, controller support, terrain generation, and stability work.

New Features

• Paths and trails added to the forest

Gameplay & Items

• New Handheld Weather Monitor
• New Waterproof Spray
• Improved cooking system, liquid handling, and cooked food visuals
• Reduced alarm clock power consumption
• Improved persistence for flashlights, batteries, lighters, and other utility items
• Added more item descriptions and localization support

Upgrades & Improvements

• Major improvements to lighting, clouds, fog, sun/moon visuals, and overall atmosphere
• Improved indoor/outdoor audio consistency through windows and doors

Quality of Life

• Added reset buttons for Video, Sound, and Gameplay Settings
• Improved controller and keyboard input support
• Improved loading flow with reduced loading screen delays
• Improved inventory swapping and item interactions
• Expanded tutorial signage and onboarding improvements
• Terrain is now generated by the GPU by default for improved performance on most systems. A CPU generation option (the previous method) is still available in Settings
• Note: As a result of the terrain generation refactor, when loading runs from previous patches, trees and rocks may appear in different locations, while the terrain itself should remain unchanged.

Fixes & Stability

• Fixed numerous crashes, save/load issues, and serialization bugs
• Fixed wetness, collision, lighting, and animation problems
• Fixed recipe detection and cooking inconsistencies
• Fixed missing localization and UI bugs
• Improved terrain generation stability and performance
• Fixed multiple controller, audio, and inventory edge cases

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Source: Steam