What is a TurboGrafx / PC Engine? Check the Wikipedia article about TurboGrafx.
With Mednafen emulator
Follow these instructions:
- Download Theron's Quest for TurboGrafx / PC Engine.
- Download this emulator: Mednafen.
- Download the TurboGrafx / PC Engine CD System Card 3.0 ROM image included in the OpenEmu BIOS Pack.
- Decompress the game, the emulator and the BIOS archives.
- Copy the ROM file syscard3.pce in the 'firmware' folder of Mednafen (create the folder if it does not exist, or run mednafen.exe once to create the folder structure).
- In Windows Explorer, drag and drop the game image file (*.cue or *.ccd) onto the mednafen.exe file to start emulation. You may also run the emulator from the command line: mednafen.exe <Full path to the game CD image>
- The keyboard controls are described here: https://mednafen.github.io/documentation/pce.html#Section_default_keys
With Ootake emulator
Follow these instructions:
- Download Theron's Quest for TurboGrafx / PC Engine.
- Decompress the archive and run "Decode.bat". It will decompress the Ogg Vorbis audio files to standard .wav files.
- Download this PC Engine emulator for Windows: Ootake.
- Download the TurboGrafx / PC Engine CD System Card 3.0 ROM image included in the OpenEmu BIOS Pack.
- Install Ootake and decompress the System Card 3.0 ROM somewhere on your hard disk (file syscard3.pce).
- You have two ways to play the game: you can burn the CD image to a CD-R or CD-RW and play the game from your real CD-ROM drive, or you can use DAEMON Tools (recommended method), which is a CD-ROM emulator for Windows. This free utility will create a virtual CD-ROM drive in which you will be able to "insert" a CD image (many formats supported). Using this tool, you can try the game without having to burn a real CD.
- If you use Daemon Tools, when you mount an image select the .cue file, not the .iso file.
- Once you inserted the CD in your CD-ROM drive (either real or virtual), start Ootake from your Start Menu. Click the '"CD-ROM" Game' button on the first screen. An error message will be displayed because the System Card file is missing and you can then browse and select the file syscard3.pce you decompressed earlier.
Notes:
With an Online emulator
You can play online here: