diff --git a/Yafc.Parser/FactorioDataSource.cs b/Yafc.Parser/FactorioDataSource.cs
index 512afbb9..a92cb74b 100644
--- a/Yafc.Parser/FactorioDataSource.cs
+++ b/Yafc.Parser/FactorioDataSource.cs
@@ -382,6 +382,14 @@ internal partial class ModInfo : IDisposable {
         private readonly List<(string mod, bool optional)> parsedDependencies = [];
         private readonly List<string> incompatibilities = [];
 
+        public bool quality_required { get; set; }
+        public bool rail_bridges_required { get; set; }
+        public bool space_travel_required { get; set; }
+        public bool spoiling_required { get; set; }
+        public bool freezing_required { get; set; }
+        public bool segmented_units_required { get; set; }
+        public bool expansion_shaders_required { get; set; }
+
         public ZipArchive? zipArchive;
         public string folder;
 
diff --git a/Yafc.Parser/LuaContext.cs b/Yafc.Parser/LuaContext.cs
index 3d5b24af..ffd867db 100644
--- a/Yafc.Parser/LuaContext.cs
+++ b/Yafc.Parser/LuaContext.cs
@@ -156,6 +156,17 @@ public LuaContext() {
 
         SetGlobal("mods", mods);
 
+        var featureFlags = NewTable();
+        featureFlags["quality"] = FactorioDataSource.allMods.Any(x => x.Value.quality_required);
+        featureFlags["rail_bridges"] = FactorioDataSource.allMods.Any(x => x.Value.rail_bridges_required);
+        featureFlags["space_travel"] = FactorioDataSource.allMods.Any(x => x.Value.space_travel_required);
+        featureFlags["spoiling"] = FactorioDataSource.allMods.Any(x => x.Value.spoiling_required);
+        featureFlags["freezing"] = FactorioDataSource.allMods.Any(x => x.Value.freezing_required);
+        featureFlags["segmented_units"] = FactorioDataSource.allMods.Any(x => x.Value.segmented_units_required);
+        featureFlags["expansion_shaders"] = FactorioDataSource.allMods.Any(x => x.Value.expansion_shaders_required);
+
+        SetGlobal("feature_flags", featureFlags);
+
         LuaCFunction traceback = CreateErrorTraceback;
         neverCollect.Add(traceback);
         lua_pushcclosure(L, Marshal.GetFunctionPointerForDelegate(traceback), 0);