Battletech - 1640 - The Battletech Compendium

Combining the gaming rules from BattleTech (board game), CityTech and AeroTech plus extra rules previously published in various other products into a single volume, The BattleTech Compendium provided rules clarifications and added a number of optional rules. In this fashion, it was the first BattleTech core rulebook.

It was superseded by the 1994 follow-up publication, BattleTech Compendium: The Rules of Warfare