too many things to list

core/src/mindustry/game/Rules.java

@@ -82,6 +82,8 @@ public class Rules{
     public Seq<WeatherEntry> weather = new Seq<>(1);
     /** Blocks that cannot be placed. */
     public ObjectSet<Block> bannedBlocks = new ObjectSet<>();
+    /** Unlocked content names. Only used in multiplayer when the campaign is enabled. */
+    public ObjectSet<String> researched = new ObjectSet<>();
     /** Whether ambient lighting is enabled. */
     public boolean lighting = false;
     /** Whether enemy lighting is visible.