Xzen Game Manager

Xzen Game Manager is a Windows game library manager built around storage savings, game discovery, poster management, background compression, and upscaler mod setup.

It expanded beyond a simple compressor and was built to scan installed games, track compression results, manage cached posters, run idle-aware background compression, and install OptiScaler-based upscaler files for compatible games.

105.47 GB Total Saved in Sample

Active Development Project Status

Development Active

Xzen Game Manager is back in active development. Work on the project has officially resumed, with continued improvements planned for the compression engine, stability, and overall user experience. Existing features will continue to be refined while new capabilities are researched, tested, and added over time <3

Compression Stats

The chart below shows local comparison results collected during project testing.

Game	Full size on disk	Xzen saved	Other tool result
TEKKEN 7	81.10 GB	29.98 GB	18.10 GB
Dying Light 2 Stay Human	123 GB	19.33 GB	9.90 GB
Forza Horizon 6	155 GB	11.87 GB	No data
Alan Wake 2	86 GB	9.64 GB	7.20 GB
Strinova	52.5 GB	7.53 GB	No data
Forza Horizon 5	148 GB	6.20 GB	7.40 GB
Need For Speed Payback	28.21 GB	5.16 GB	No data
Sons Of The Forest	15 GB	3.80 GB	No data

Other smaller tested games were included in the total, including:

League of Legends: 2.23 GB saved
VALORANT: 2.20 GB saved
Hogwarts Legacy: 1.30 GB saved

These numbers are not a promise that every game will compress better with Xzen. Compression results depend on the game's file formats, already-compressed assets, updates, disk format, Windows behavior, and selected compression algorithm.

Core Capabilities

What It Does

Scans and manages installed games from Steam and other supported library sources.
Lets you manually add games that are not detected automatically.
Downloads and caches vertical game posters.
Supports custom poster cropping.
Compresses and decompresses game folders with Windows NTFS compression.
Tracks original size, compressed size, saved storage, compressed file count, and compression status.
Supports single-game compression and decompression.
Supports background compression with selected game queues.
Pauses background work when a game is detected.
Shows progress for total work, current game, files, and processed data.

Game Library

The Game Library tab is the main game view. It shows:

Poster
Game name
Source or store
Original size
Compressed size
Saved storage
Poster status
Compression state
Compress or Decompress action

Poster System

Steam poster cache lookup
SteamGridDB lookup
Steam CDN fallback
Steam store-art fallback
Cached local poster storage
Manual poster crop tool

Supported Stores

The system automatically scans and detects game installations from the following platforms:

Steam
Epic Games
itch.io
GOG / GOG Galaxy
Xbox
Microsoft Store
EA App
Ubisoft Connect
Battle.net

Compression Engine

Compression Modes

The app uses Windows compact.exe compression through selectable algorithms:

XPRESS4K: fastest, lowest savings
XPRESS8K: balanced default
XPRESS16K: stronger compression
LZX: strongest, slowest

Background Compression

Choose games for compression or decompression.
Sort and queue games automatically.
Show current game progress.
Pause when a game is detected.
Resume after the system is idle again.
Cancel with optional cleanup decompression.

Upscaler Mods

Detects games with DLSS, FSR, XeSS, and related DLL targets.
Installs OptiScaler beside the selected game executable.
Supports wrapper choices such as dxgi.dll, winmm.dll, d3d12.dll, version.dll, and other supported wrappers.
Can update the bundled OptiScaler source from official GitHub releases.
Supports FSR4 INT8 replacement.
Supports OptiPatcher installation.
Writes install records so uninstall can remove files and restore backups.

Important

Online games can trigger anti-cheat systems when DLL injection or upscaler wrappers are installed.

Technical & System

Requirements

Windows 10 or Windows 11
NTFS formatted game drive
Python 3.14 for source runs
PyQt5
requests
pydantic
platformdirs
py7zr
PyInstaller for building

Commands

Install dependencies:

pip install -r requirements.txt

Run from source:

python main.py

Build the EXE:

                python -X utf8 -m PyInstaller --noconfirm --clean
                "Xzen Game Manager.spec"
              

Download Xzen Game Manager Go to GitHub