Exellent site for material hacks for (mostly) Valve games. Think CSS, TS2, L4D etc...
- Mathacks are wallhacks to everyone else, often allowing you to see through doors, props, folliage, and most walls.
- They can light up enemies and/or items & weapons of interest with fullbright plan colour skins, making target aquisition much faster.
- They are undetectable and non VAC-banable, this is because they modifiy the same files that legit skins would change to make guns or players look better.
- Mathacks do not use external programs either, and can be turned on/off simply be swaping or renaming folders from defaults to the hacked versions.