What are the patches for?
The patches can be found on core-eidos’s webpage (http://www.core-design.com), and are used to overcome bugs in the programs. The patch for TR1 and TR2 solves some bugs as well as cutting down on the CD-ROM access, speeding up the game slightly. The patch for TR3 also fixes some bugs, and solves the skipping music problem, but beware, some of the saved games on TR3 may not work after loading the patch, so do it first.