Rule Set Bookshelf

AD&D DM's Guide AD&D Player's Handbook KnightHack 1st Edition
The classic PHB for AD&D. My first hardcover AD&D book. The original KnightHack is a beer and pretzels game.
KnightHack 3rd Edition Starfleet Battles (2005) Federation Commander

Completely reworked, this excellent game plays quick. ADB's Starfleet Battles is an amazing simulator.  When micromanagement isn't enough.