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This guide will get you from zero to a fully configured Chimera installation in just a few minutes.

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Prerequisites

Before you begin, ensure you have:
  • Halo: Combat Evolved PC (version 1.10) or Halo Custom Edition
  • Administrator access to install files (if Halo is in Program Files)
  • A backup of important files (we’ll guide you through this)
This guide assumes you have Halo PC or Custom Edition already installed. If not, install it first before continuing.

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Quick Setup

1

Download Chimera

Go to the Chimera releases page and download the latest release. You need:
  • strings.dll - The main Chimera mod file
  • chimera.ini - Configuration file
  • fonts/ folder - Font files for custom text rendering
Download the latest release, not pre-releases, for the most stable experience.
2

Back up your original strings.dll

Navigate to your Halo installation folder and rename the existing strings.dll to strings-old.dll:
# Example path:
C:\Program Files (x86)\Microsoft Games\Halo\strings.dll
# Rename to:
C:\Program Files (x86)\Microsoft Games\Halo\strings-old.dll
Do NOT skip this step! You need the original file to uninstall Chimera later.
3

Copy Chimera files

Copy the downloaded files to your Halo installation folder:
  • strings.dll → Halo main folder
  • chimera.ini → Halo main folder
  • fonts/ → Halo main folder
Your folder structure should look like:
C:\Program Files (x86)\Microsoft Games\Halo\
├── halo.exe
├── strings.dll          ← Chimera
├── strings-old.dll      ← Your backup
├── chimera.ini
└── fonts/
    ├── ...font files...
Install to the main game folder, NOT the controls subfolder!
4

Launch Halo

Start Halo normally. Chimera loads automatically - you don’t need to do anything special.To verify Chimera is working:
  1. Press the tilde key (~) to open the console
  2. Type chimera and press Enter
  3. You should see Chimera version information
5

Configure essentials

Try these essential commands to get the best experience:
# Open console with ~ (tilde) key, then type:
chimera_block_all_bullshit        # Disables annoying UI elements
chimera_fov 90v                   # Set FOV to 90 degrees (vertical)
chimera_show_fps true             # Display FPS counter
chimera_widescreen_fix 1          # Fix HUD for widescreen
This convenient command runs multiple commands at once:
  • chimera_block_gametype_indicator 1 - Removes gametype indicator
  • chimera_block_gametype_rules 1 - Skips gametype rules screen
  • chimera_block_hold_f1 1 - Removes “Hold F1” message
  • chimera_block_loading_screen 1 - Removes loading screen flash
  • chimera_block_mouse_acceleration 1 - Disables mouse acceleration

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Next Steps

Configure chimera.ini

Customize Chimera’s behavior through the configuration file

Explore Commands

Learn about all available Chimera commands

Enable Features

Discover Chimera’s extensive feature set

Troubleshooting

Having issues? Check the troubleshooting guide

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Essential Configuration

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Optimal Defaults

For the best out-of-the-box experience, enable optimal defaults in chimera.ini: 
[halo]
optimal_defaults=1
This automatically enables:
  • chimera_af true - Anisotropic filtering
  • chimera_aim_assist true - Controller aim assist
  • chimera_block_loading_screen true - No loading screen flash
  • chimera_block_mouse_acceleration true - Raw mouse input
  • chimera_diagonals 0.75 - Better analog stick diagonals
  • chimera_fov auto - Automatic FOV scaling
  • chimera_throttle_fps 300 - Cap FPS to 300
  • chimera_uncap_cinematic true - Unlock 30 FPS cap in cutscenes
  • chimera_model_detail true - Force highest LOD models

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Video Settings

For better visuals, add to chimera.ini: 
[video_mode]
enabled=1
width=1920
height=1080
refresh_rate=144
vsync=0
windowed=0
af=16

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Console Access

Enable the console for easy command access: 
[halo]
console=1

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Common First Commands

Once installed, open the console (~ key) and try these: 
chimera_fov 90v                    # Field of view
chimera_widescreen_fix 1           # Widescreen HUD
chimera_show_fps true              # FPS counter
chimera_af true                    # Anisotropic filtering

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Verify Installation

To confirm everything is working correctly:
  1. Open console with ~ key
  2. Type chimera and press Enter
  3. You should see version information and build date
  1. Start a game (any map)
  2. You should immediately notice smoother movement beyond 30 FPS
  3. The difference is most noticeable on objects and vehicles
  1. Type chimera_show_fps true in console
  2. You should see an FPS counter appear in the top-right
  3. Try chimera_fov 90v - your FOV should change immediately

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Quick Troubleshooting

  • Verify files are in the main Halo folder, not controls
  • Make sure you replaced the correct strings.dll
  • Check file permissions if Halo is in Program Files
  • Try running Halo as administrator
  • Enable it in chimera.ini: console=1 under [halo]
  • Restart Halo after changing chimera.ini
  • Try the default key: tilde (~) or backtick (`)
  • Commands entered in console only last until you quit
  • Add persistent commands to chimera.ini or use hotkeys
  • Alternatively, create an init.txt file and load it with exec=path\to\init.txt
Need more help? Check the FAQ or Troubleshooting pages for detailed solutions.

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What’s Next?

Now that Chimera is installed:
  1. Customize your experience - Edit chimera.ini to configure video, controller, and chat settings
  2. Learn the commands - Browse the command reference to unlock Chimera’s full potential
  3. Try Lua scripting - Create custom scripts for automation and extended features
  4. Join the community - Visit the GitHub repository for updates and support

Ready to dive deeper?

Explore all of Chimera’s features →

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