OpenSpeedy: An Open-Source Free Game Booster
OpenSpeedy: An Open-Source Free Game BoosterIntroduction
OpenSpeedy is a free, open-source Windows game speed-changing tool. It adjusts game running speed by intercepting system time functions such as Sleep and GetTickCount, without modifying game files or touching the kernel. It can be used to boost frame rates and speed up or slow down game processes. It supports x86 and x64 processes, features a simple interface, consumes few resources, and allows customizable speed multipliers, making it suitable for single-player games, development testing, or teaching demonstrations.

OpenSpeedy Key Features
Free and Open-Source: Released under a permissive license, it can be freely downloaded, installed, and further developed, with no licensing fees.
Easy to Use: The interface is intuitive. After launching, simply select the game process and adjust the speed multiplier via a slider or input box.
Broad Compatibility: Supports major engines such as Unity and Unreal, and is compatible with both x86 and x64 platform processes.
Safe and Stable: Uses Ring3 layer (user-mode) Hook technology, without involving the kernel, avoiding system instability or security risks.
Lightweight and Compact: The OpenSpeedy installation package is only a dozen MB, and running in the background does not slow down your computer.
Quick Operations: Supports hotkeys for fast speed adjustment, with key functions clearly labeled.
Information Display: Shows the current device's operating system, CPU, and other information.
No Internet Required: Works offline, with all data stored locally to protect privacy.
Multi-Language Support: Includes dozens of languages such as Simplified Chinese.
OpenSpeedy Installation and Usage
How to Get It
GitHub Download: Visit the project page at https://github.com/game1024/OpenSpeedy, download the portable version or installer, extract it, and double-click OpenSpeedy.exe to use it.
Package Manager (Optional): If winget is configured on your system, you can install/launch/update via command:
Install: winget install openspeedy
Launch: openspeedy
Update: winget upgrade openspeedy
Basic Operation Steps
Run OpenSpeedy as Administrator (to ensure proper process interception).
Launch the target game, then select the corresponding game process in OpenSpeedy.
Set the speed multiplier via the slider or input box (recommended to start with 1.0x~2.0x).
Changes take effect immediately after setting. You can save the configuration or use hotkeys for quick switching.
System Requirements
Operating System: Windows 10 or higher.
Supported Platforms: x86 (32-bit) and x64 (64-bit).
OpenSpeedy Use Cases and Recommendations
Use Cases: Frame rate unlocking, cutscene skipping, and improved farming efficiency for single-player/offline games; performance/timing verification in game development and testing; frame rate and time control in teaching demonstrations.
Usage Recommendations: Start with a low multiplier initially (such as 1.1x~1.5x), and observe frame rate, input latency, and physics effects; if crashes or anomalies occur, lower the multiplier first or disable other modification tools; if necessary, set multipliers separately for different child processes (e.g., accelerate only the main game process).
Important Notes
Single-Player Only: Avoid using it in online games to prevent violating game rules and getting banned.
Respect Game Design: Do not disrupt game balance or the original design intent.
Adjust Moderately: Avoid extreme acceleration that could cause game crashes.
For Learning Purposes: The tool is primarily intended for skill improvement, not cheating.
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