Trivia
In the German gaming magazine GameStar (issue 02/2001) Mechwarrior 4: Vengeance was named as "Best Simulation in 2000".
A "dedicated server" program was included if you want to host your own games, up to 16 players on a broadband connection.
The game has TWO DIFFERENT endings depending on one critical choice you will make near the end.
In the final operation, one of the missions, you can find a building that's identified as "FASA Interactive", the developer of the game! And it's ID'ed as HOSTILE! :-)
Originally, this game was supposed to be Mechwarrior 3. When it was delayed, Zipper Interactive was brought in to create the interim Mechwarrior 3 as a stopgap measure, and this game was redesignated as Mechwarrior 4.