diff --git a/horse/game-id.kk b/horse/game-id.kk
index f36d36c..5d3f969 100644
--- a/horse/game-id.kk
+++ b/horse/game-id.kk
@@ -2,7 +2,7 @@ module horse/game-id
 
 // Game ID for characters, cards, skills, races, &c.
 // Values for different categories may overlap.
-alias game-id = int
+pub alias game-id = int
 
 // Specific game ID types.
 // I've already made mistakes with ID categories and I haven't even committed this file yet.