Game Rules codex entries give information about the various Game Rules.
- Codex/Advanced Class: Commando
- Codex/Advanced Class: Gunslinger
- Codex/Advanced Class: Jedi Guardian
- Codex/Advanced Class: Jedi Sage
- Codex/Advanced Class: Jedi Sentinel
- Codex/Advanced Class: Jedi Shadow
- Codex/Advanced Class: Mercenary
- Codex/Advanced Class: Operative
- Codex/Advanced Class: Powertech
- Codex/Advanced Class: Scoundrel
- Codex/Advanced Class: Sith Assassin
- Codex/Advanced Class: Sith Marauder
- Codex/Advanced Class: Sith Juggernaut
- Codex/Advanced Class: Sith Sorcerer
- Codex/Advanced Class: Sniper
- Codex/Advanced Class: Vanguard
- Codex/Advanced Gear
- Codex/Bounty Hunter
- Codex/Combat
- Codex/Conversations
- Codex/Energy
- Codex/Group Content
- Codex/Heat
- Codex/Imperial Agent
- Codex/Item Modifications
- Codex/Jedi Consular
- Codex/Jedi Knight
- Codex/Missions
- Codex/Other Players
- Codex/Phasing and Story Areas
- Codex/Resolve
- Codex/Sith Inquisitor
- Codex/Sith Warrior
- Codex/Smuggler
- Codex/Social Points
- Codex/Space Combat
- Codex/Trooper