SYSTEM //FULL GAME · LIVE ON STEAMCURRENT BUILD // 1.0.8 · LAST VERIFIED // 26 SEPT 2026 · OFFICIAL SOURCE ↗
SOURCE-LABELLED GUIDE · CLAIM-BY-CLAIM EVIDENCE BELOWLAST CHECKED · 2026-09-26

Project P.I.T.T. Native Linux Reference

Native Linux Reference: Steam supplies a native Linux build.

QUICK ANSWER

Steam supplies a native Linux build. Its configured XDG data path is different from a forced Windows build's Proton compatibility prefix.

ON THIS PAGE
  1. Check the specific platform state
  2. Linux (native) save configuration
  3. A reversible diagnostic record
  4. Evidence and verification limits

Check the specific platform state

Check whether the running build is native before applying the Linux path. If XDG_DATA_HOME is customized, use that root; the standard fallback is ~/.local/share.

Evidence for this section (3)

OFFICIAL CURRENT · checked 2026-09-26

The official Steam listing supports Windows, macOS and Linux and describes a single-player game.

Build relevance: Live store check September 26

Official Steam store page ↗

OFFICIAL HISTORICAL · checked 2026-09-26

The Steam UFS configuration names Windows, macOS and Linux roots plus save, backup and configuration file patterns.

Build relevance: Configuration mirrored by SteamDB, checked September 26

Limit: Configuration-derived locations, not a tested restore or corruption repair.

Steam app cloud-save configuration, mirrored by SteamDB ↗ Steamworks — Auto-Cloud roots and overrides ↗

OFFICIAL HISTORICAL · checked 2026-09-26

Valve's compatibility record lists Steam Deck Verified, native runtime and a note about manually selecting external controllers.

Build relevance: Valve compatibility test August 6, mirrored configuration checked September 26

Limit: Not a new performance benchmark of 1.0.8.

Steam app launch configuration, mirrored by SteamDB ↗

Sources: Official Steam store page ↗ · Steam app cloud-save configuration, mirrored by SteamDB ↗ · Steamworks — Auto-Cloud roots and overrides ↗ · Steam app launch configuration, mirrored by SteamDB ↗

Linux (native) save configuration

The configured user-data location is $XDG_DATA_HOME/godot/app_userdata/Project P.I.T.T. This is derived from Steam's configuration, not a local restore test. The folder name ends in T without an additional trailing period.

Linux (native) configured save data
FieldValue
RootLinuxXdgDataHome override; default ~/.local/share
Path$XDG_DATA_HOME/godot/app_userdata/Project P.I.T.T
Patterns*.save, *.save.bak, profile.cfg, settings.cfg, keybindings.cfg, locale.cfg
Evidence for this section (1)

OFFICIAL HISTORICAL · checked 2026-09-26

The Steam UFS configuration names Windows, macOS and Linux roots plus save, backup and configuration file patterns.

Build relevance: Configuration mirrored by SteamDB, checked September 26

Limit: Configuration-derived locations, not a tested restore or corruption repair.

Steam app cloud-save configuration, mirrored by SteamDB ↗ Steamworks — Auto-Cloud roots and overrides ↗

Sources: Steam app cloud-save configuration, mirrored by SteamDB ↗ · Steamworks — Auto-Cloud roots and overrides ↗

A reversible diagnostic record

Keep the selected platform/runtime, input device and exact action together. If a change fails, return to the prior configuration and preserve the save backup; do not combine a file restore, a controller reset and a renderer change in one unexplained experiment.

Sources:

Evidence and verification limits

Source retrieval confirms what a source says, not a new in-game replay. Patch notes retain their version; community observations retain their limitations.

Evidence for this section (3)

OFFICIAL CURRENT · checked 2026-09-26

The official Steam listing supports Windows, macOS and Linux and describes a single-player game.

Build relevance: Live store check September 26

Official Steam store page ↗

OFFICIAL HISTORICAL · checked 2026-09-26

The Steam UFS configuration names Windows, macOS and Linux roots plus save, backup and configuration file patterns.

Build relevance: Configuration mirrored by SteamDB, checked September 26

Limit: Configuration-derived locations, not a tested restore or corruption repair.

Steam app cloud-save configuration, mirrored by SteamDB ↗ Steamworks — Auto-Cloud roots and overrides ↗

OFFICIAL HISTORICAL · checked 2026-09-26

Valve's compatibility record lists Steam Deck Verified, native runtime and a note about manually selecting external controllers.

Build relevance: Valve compatibility test August 6, mirrored configuration checked September 26

Limit: Not a new performance benchmark of 1.0.8.

Steam app launch configuration, mirrored by SteamDB ↗

Sources: Official Steam store page ↗ · Steam app cloud-save configuration, mirrored by SteamDB ↗ · Steamworks — Auto-Cloud roots and overrides ↗ · Steam app launch configuration, mirrored by SteamDB ↗

SOURCE NOTE

Primary source: Official Steam store page ↗. Scope: full game.

A source-check date is not an in-game test date. Historical fixes and community observations retain their stated scope.

Related topics and applications

Choose a specific question. Evidence-limited references are labelled; their presence here does not verify an undocumented mechanic.

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