Welcome to the homepage of the CTools programs and the SZS Modifier.
Tutorials about custom Mario Kart Wii track creation, as well as information about file formats can be found at http://wiki.tockdom.de.
The CTools library is a series of programs designed to edit Nintendo's game
files, but specifically Mario Kart Wii. The tools are still in development
at this time. They can be downloaded from
For anyone having problems with the 3D renderer in CTools, please be patient, I am
working to fix the problem.
The SZS Modifier program is the original program to allow you to load up and alter Mario
Kart Wii's SZS files. This allows the user to perform texture hacks and model
hacks to Mario Kart Wii and any other Nintendo Wii games which use the same .szs
file data and then export these files back into the game. The some instructions
for the useage of the program can be found in the video
here (now a little outdated) or in the readme at
This site also serves as an exchange server for the modified data. It is illegal
to host the original files, so instead .sfp files are hosted which have been designed
to not include any copyrighted materials, however copyright liability for these
files still rests with the original creators should conflict arise.