Sigil Online
Choose a game mode
In progress
Local 1v1
Play on the same screen with a friend
vs AI (Easy)
Stone-count minimax, 0.1s per turn
vs AI (Medium)
Stone-count minimax, 1s per turn
vs AI (Hard)
Stone-count minimax, 5s per turn
vs AI (Very Hard)
Stone-count minimax, 60s per turn
Online Multiplayer
Play with a friend over the internet
Active Games
Resume your ongoing online games
Leaderboard
Top rated players
Annotate Positions
Help train Sigil's AI by labeling ambiguous positions
Account
Sign in for ranked play and ratings
Rulebook
Official rules (PDF)
Discord
Join the community to chat and find opponents
Expansion packs
(core is always included; expansion AI games are unrated)
Springtime
Celestial
Fury
Tempest
Tsunami
Panda
Competitive variant
Empty board start; both players blink onto any node for their first move.
Theme
