Chaos Strikes Back for PC-9801

Editions

Games

Chaos Strikes Back for PC-9801 (Japan 3.5 inch floppy disks)

3D Box Chaos Strikes Back Editions Manuals PC-9801 / PC-9821

Games

Chaos Strikes Back for PC-9801 (Japan 5.25 inch floppy disks)

3D Box Chaos Strikes Back Editions Manuals PC-9801 / PC-9821

Screenshots

Version 3.1 Japanese (8-bit)

Version 3.1 Japanese (16-bit)

Videos

Information

Retail price: ¥9800
Known versions:

• Version 3.1 Japanese

Downloads

Chaos Strikes Back (Japan, PC-9801)

These versions consist of PC-9801 disk images in HDM format.
Chaos Strikes Back for PC-9801 3.1 (Japanese) Original (Not working).hdm

• This is an image of the original floppy disk (except the copy protection sectors) and cannot be started because of the copy protection.

Chaos Strikes Back for PC-9801 3.1 (Japanese) Cracked.hdm

• This version is cracked (with the crack details below).

See also: How to play PC-9801 / PC-9821 games under Windows? (Dungeon Master, Chaos Strikes Back and Dungeon Master II)

Crack

To apply the crack, follow these steps:

1. Download DiskExplorer DiskExplorer.
2. Use DiskExplorer to extract the file CSBGAME from the disk image.
3. The original CSBGAME file is compressed with LZEXE. Use UNLZEXE to decompress the file.
4. Open the file in a hexadecimal editor.
5. Go to offset E48Ch and replace ‘33 FF 8B F7 56’ by ‘EB 59 8B F7 56’. This will remove the protection check when you save the game.
6. Go to offset 1492Eh and replace ‘C7 46 F0 02 00’ by ‘EB 20 F0 02 00’. This will remove the protection check when you start a new game.
7. Use DiskExplorer to import the cracked file CSBGAME into the disk image (no need to compress the file).