Sonic the Hedgehog 4: Episode II

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Sonic the Hedgehog 4: Episode II
Sonic the Hedgehog 4: Episode II cover
Sonic Team
Sega NN Graphics Library[1]
Release dates
Windows May 15, 2012
Metacritic 54
Series Sonic the Hedgehog
Sonic the Hedgehog 4: Episode II on HowLongToBeat
Sonic the Hedgehog 4: Episode II on IGDB
Sonic the Hedgehog 4: Episode II on MobyGames
Sonic the Hedgehog 4: Episode II on Wikipedia
Sonic CD (1996) 1996
Sonic's Schoolhouse 1996
Sonic 3D Blast 1997
Sonic & Knuckles Collection 1997
Sonic R (1998) 1998
Sonic R (2004) 2004
Sonic Adventure (series)
Sonic Heroes 2004
Sonic Mega Collection Plus 2006
Sonic Riders 2006
Sonic Racing (series)
Sonic 3D Blast (2010) 2010
Sonic the Hedgehog 2010
Dr. Robotnik's Mean Bean Machine 2010
Sonic Spinball 2010
Sonic the Hedgehog 2 2011
Sonic 3 & Knuckles 2011
Sonic Generations 2011
Sonic CD (2012) 2012
Sonic the Hedgehog 4: Episode I 2012
Sonic the Hedgehog 4: Episode II 2012
Sonic Dash 2014
Sonic Lost World 2015
Sonic Mania 2017
Sonic Forces 2017
Sonic the Hedgehog (Mobile Decompilation) 2021
Sonic the Hedgehog 2 (Mobile Decompilation) 2021
Sonic Colors: Ultimate 2021
Sonic Origins 2022
Sonic Frontiers 2022

Key points

High frame rate (more than 60 FPS) breaks the game speed.

General information

Steam Community Discussions


Source DRM Notes Keys OS
Gamesplanet logo.svg
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Humble Store
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All versions require Steam DRM.

Game data[edit]

Configuration file(s) location[edit]

System Location
Windows <path-to-game>\Config\[Note 1]
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/203650/pfx/[Note 2]

Save game data location[edit]

System Location
Windows <path-to-game>\Sonic_save.dat[Note 1]
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/203650/pfx/[Note 2]

Save game cloud syncing[edit]

System Native Notes
Steam Cloud


Launcher video settings.
Launcher video settings.

Graphics feature State WSGF Notes
Widescreen resolution
See the WSGF entry.
4K Ultra HD
Field of view (FOV)
See Field of view (FOV).
Borderless fullscreen windowed
See the glossary page for potential workarounds.
Anisotropic filtering (AF)
See the glossary page for potential workarounds.
Anti-aliasing (AA)
Nvidia users can force SGSSAA in fullscreen mode using Nvidia Profile Inspector with the 0x000012C1 antialiasing flag.[2]
Vertical sync (Vsync)
See the glossary page for potential workarounds.
60 FPS
120+ FPS
High FPS speeds up gameplay (see Game runs too fast).
High dynamic range display (HDR)
See the glossary page for potential alternatives.

Field of view (FOV)[edit]

Change FOV with hex edit[citation needed]
  1. Download Sonic 4 Episode 2 Adjustable FOV.
  2. Extract D3DX9_43.dll to the installation folder.
  3. Open D3DX9_43.dll with a hex editor such as HxD.
  4. Go to offset 0x1B057A and replace the bytes 00 00 80 3F with bytes representing your float value multiplier (the default multiplier is 1.0). Remember to invert the byte order to Little Endian.


There's also a Cheat Engine table to change the game's FOV anytime while running (requires D3DX9_43.dll).


Launcher keyboard mapping menu.
Launcher keyboard mapping menu.
Launcher controller mapping menu.
Launcher controller mapping menu.

Keyboard and mouse State Notes
To assign Space to an action, hold down Space and press another key.
Mouse acceleration
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller support
XInput controllers only.
Full controller support
Controller remapping
See the glossary page for potential workarounds.
Controller sensitivity
Controller Y-axis inversion
Controller types
XInput-compatible controllers
Xbox button prompts
Impulse Trigger vibration
DualShock 4 controllers
See the glossary page for potential workarounds.
Generic/other controllers
See the glossary page for potential workarounds.
Additional information
Controller hotplugging
Haptic feedback
Simultaneous controller+KB/M


Audio settings.
Audio settings.

Audio feature State Notes
Separate volume controls
Music, SFX
Surround sound
Closed captions
Mute on focus lost


Language UI Audio Sub Notes


Multiplayer types

Type Native Players Notes
Local play
2 Co-op
LAN play
Online play
2 Co-op

Issues fixed[edit]

Windows 8 compatibility problems[edit]

Apply compatibility modes[3]
  1. Go to the properties for Sonic_vis.exe.
  2. On the Compatibility tab, choose Run this program in compatibility mode for: and choose Windows 7.
  3. Choose Run as administrator.
  4. Click OK to save your changes.
  5. Run the game in windowed mode.
  6. After exiting the game you may need to manually kill Sonic_vis.exe from the Task Manager.

Game runs too fast[edit]

Game may run at a very high speed.[4] Use one of the following methods.
Lock frame rate at 60 FPS (resolutions higher than 60 Hz)[citation needed]

See Frame rate capping to lock frame rate to 60 FPS.

Force Vsync (60 Hz resolutions only)[citation needed]

Force Vsync in the graphics card control panel for this game only.

Run the game at screen refresh rate[edit]

Fullscreen mode is limited to 60 Hz, even if the screen refresh rate is set higher than that.
Set screen refresh rate[citation needed]
  1. Download Special K.
  2. Copy SpecialK32.dll to the installation folder.
  3. Rename SpecialK32.dll to d3d9.dll.
  4. Start the game and exit.
  5. Open d3d9.ini in the installation folder.
  6. Change TargetFPS=0.0 to TargetFPS=60.0.
  7. Change RefreshRate=-1 to RefreshRate=0.

Other information[edit]


Technical specs Supported Notes
Direct3D 9
Executable 32-bit 64-bit Notes


Sonic 4 Mod Loader[edit]

Mod manager for Sonic the Hedgehog 4: Episode I and Sonic the Hedgehog 4: Episode II.

Classic Sonic & Tails[edit]

Replaces the model and animations of Modern Sonic & Tails with new re-adapted models of Classic Sonic & Tails from Sonic Generations. Also includes a special stage remix.

7 Special Stage Themes[edit]

Replaces the special stage music with one of seven remixed special stage themes.

No HUD[edit]

Removes the HUD from all gameplay stages and special stages.

System requirements[edit]

Minimum Recommended
Operating system (OS) XP, Vista
Processor (CPU) Intel Pentium 4 3.2 GHz
AMD Athlon 64 3000+
System memory (RAM) 1 GB
2 GB (Vista)
Hard disk drive (HDD) 6 GB
Video card (GPU) Nvidia GeForce 8600
ATI Radeon HD 3650
256 MB of VRAM
DirectX 9.0c compatible
Sound (audio device) DirectX compatible


  1. 1.0 1.1 When running this game without elevated privileges (Run as administrator option), write operations against a location below %PROGRAMFILES%, %PROGRAMDATA%, or %WINDIR% might be redirected to %LOCALAPPDATA%\VirtualStore on Windows Vista and later (more details).
  2. 2.0 2.1 File/folder structure within this directory reflects the path(s) listed for Windows and/or Steam game data (use Wine regedit to access Windows registry paths). Games with Steam Cloud support may store data in ~/.steam/steam/userdata/<user-id>/203650/ in addition to or instead of this directory. The app ID (203650) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.


  1. Verified by User:Icup321 on 2020-06-28
    Confirmed via checking file formats and embedded strings in executable: nn Ver 1.01.06b Build:Mar 4 2012 18:46:50, SEGA NN Library for DirectX G2.0
  2. Forums - View Single Post - NVidia Anti-Aliasing Guide (updated)
  3. Windows 8 Temp Fix - Steam Users' Forums (retrieved)
  4. Episode 2 Plays at super speed - Steam Users' Forums (retrieved)