# Star Wars: Legion rules reference (unofficial) > Fan-made web version of the free rules documents published by Atomic Mass Games at https://www.atomicmassgames.com/swlegiondocs/. Core rules effective 2026-06-17; errata effective 2026-06-17. The official PDFs are authoritative. ## Rules - [Components](/md/rulebook/components.md): Core Rulebook, from page 4 - [Game Overview](/md/rulebook/game-overview.md): Core Rulebook, from page 5 - [Key Concepts](/md/rulebook/key-concepts.md): Core Rulebook, from page 5 - [Getting Ready to Play](/md/rulebook/getting-ready-to-play.md): Core Rulebook, from page 16 - [Game Mechanics](/md/rulebook/game-mechanics.md): Core Rulebook, from page 21 - [Appendix A: Notched Bases](/md/rulebook/appendix-a-notched-bases.md): Core Rulebook, from page 39 - [Appendix B: Unit Types](/md/rulebook/appendix-b-unit-types.md): Core Rulebook, from page 39 - [Appendix C: Mercenaries and Battle Forces](/md/rulebook/appendix-c-mercenaries-and-battle-forces.md): Core Rulebook, from page 41 - [Appendix D: Legacy Card Anatomy](/md/rulebook/appendix-d-legacy-card-anatomy.md): Core Rulebook, from page 42 - [Appendix E: Timing](/md/rulebook/appendix-e-timing.md): Core Rulebook, from page 44 - [Keyword Glossary](/md/rulebook/keyword-glossary.md): Core Rulebook, from page 46 - [Change Log](/md/rulebook/change-log.md): Core Rulebook, from page 63 - [Legacy Tokens](/md/rulebook/legacy-tokens.md): Core Rulebook, from page 65 - [Line of Sight Silhouette Templates](/md/rulebook/line-of-sight-silhouette-templates.md): Core Rulebook, from page 65 ## Data - [Keywords](/api/keywords.json): every keyword with its rules text - [Cards](/api/cards.json): card data with :icon: tokens and [[keyword]] references - [Errata](/api/errata.json): points adjustments, card errata, updated and removed cards