Games

Hints, Tricks, Cheats & Levels:

Descent (german only)
Descent 2 (german only)
Warcraft (german only)
Warcraft 2 (german only)
Dune 2 (german only)
Epic Pinball (german only)
Jazz Jackrabbit 2
Descent 3
Conflict: Freespace (= Descent Freespace)

There is nothing about newer games here but everything here is tested personally and is working.
If you're looking for more, try Dirty Little Helper.