diff --git a/android/src/com/unciv/app/AndroidLauncher.kt b/android/src/com/unciv/app/AndroidLauncher.kt
index 3d14f6e7ad..877c34e151 100644
--- a/android/src/com/unciv/app/AndroidLauncher.kt
+++ b/android/src/com/unciv/app/AndroidLauncher.kt
@@ -29,7 +29,7 @@ open class AndroidLauncher : AndroidApplication() {
             if(externalfilesDir!=null) GameSaver.externalFilesDirForAndroid = externalfilesDir.path
 		}
 
-        val config = AndroidApplicationConfiguration().apply { useImmersiveMode = true }
+        val config = AndroidApplicationConfiguration().apply { useImmersiveMode = true; }
         val androidParameters = UncivGameParameters(
                 version = BuildConfig.VERSION_NAME,
                 crashReportSender = CrashReportSenderAndroid(this),
diff --git a/buildSrc/src/main/kotlin/BuildConfig.kt b/buildSrc/src/main/kotlin/BuildConfig.kt
index 7c09077162..2ed652b3fc 100644
--- a/buildSrc/src/main/kotlin/BuildConfig.kt
+++ b/buildSrc/src/main/kotlin/BuildConfig.kt
@@ -3,8 +3,8 @@ package com.unciv.build
 object BuildConfig {
     const val kotlinVersion = "1.4.30"
     const val appName = "Unciv"
-    const val appCodeNumber = 534
-    const val appVersion = "3.13.3"
+    const val appCodeNumber = 535
+    const val appVersion = "3.13.3-patch1"
 
     const val gdxVersion = "1.9.14"
     const val roboVMVersion = "2.3.1"
diff --git a/core/src/com/unciv/logic/map/mapgenerator/MapGenerator.kt b/core/src/com/unciv/logic/map/mapgenerator/MapGenerator.kt
index 7a4cd0e2ba..106eca1fef 100644
--- a/core/src/com/unciv/logic/map/mapgenerator/MapGenerator.kt
+++ b/core/src/com/unciv/logic/map/mapgenerator/MapGenerator.kt
@@ -218,8 +218,23 @@ class MapGenerator(val ruleset: Ruleset) {
             var temperature = (5.0 * latitudeTemperature + randomTemperature) / 6.0
             temperature = abs(temperature).pow(1.0 - tileMap.mapParameters.temperatureExtremeness) * temperature.sign
 
+            // Old, static map generation rules - necessary for existing base ruleset mods to continue to function
+            if (ruleset.terrains.values.asSequence().flatMap { it.uniqueObjects }
+                            .none { it.placeholderText == "Occurs at temperature between [] and [] and humidity between [] and []" }) {
+                tile.baseTerrain = when {
+                    temperature < -0.4 -> if (humidity < 0.5) Constants.snow   else Constants.tundra
+                    temperature < 0.8  -> if (humidity < 0.5) Constants.plains else Constants.grassland
+                    temperature <= 1.0 -> if (humidity < 0.7) Constants.desert else Constants.plains
+                    else -> {
+                        println(temperature)
+                        Constants.lakes
+                    }
+                }
+                continue
+            }
+
             val matchingTerrain = ruleset.terrains.values.firstOrNull {
-                it.uniques.map { Unique(it) }.any {
+                it.uniqueObjects.any {
                     it.placeholderText == "Occurs at temperature between [] and [] and humidity between [] and []"
                             && it.params[0].toFloat() < temperature && temperature < it.params[1].toFloat()
                             && it.params[2].toFloat() < humidity && humidity < it.params[3].toFloat()
diff --git a/core/src/com/unciv/models/ruleset/tile/Terrain.kt b/core/src/com/unciv/models/ruleset/tile/Terrain.kt
index 550dc29bf2..a901f9bc67 100644
--- a/core/src/com/unciv/models/ruleset/tile/Terrain.kt
+++ b/core/src/com/unciv/models/ruleset/tile/Terrain.kt
@@ -3,6 +3,7 @@ package com.unciv.models.ruleset.tile
 import com.badlogic.gdx.graphics.Color
 import com.unciv.Constants
 import com.unciv.models.ruleset.Ruleset
+import com.unciv.models.ruleset.Unique
 import com.unciv.models.stats.NamedStats
 import com.unciv.models.translations.tr
 import com.unciv.ui.utils.colorFromRGB
@@ -13,9 +14,6 @@ class Terrain : NamedStats() {
 
     var overrideStats = false
 
-    /** If true, other terrain layers can come over this one. For mountains, lakes etc. this is false  */
-    var canHaveOverlay = true
-
     /** If true, nothing can be built here - not even resource improvements */
     var unbuildable = false
 
@@ -27,6 +25,7 @@ class Terrain : NamedStats() {
 
     /** Uniques (currently used only for Natural Wonders) */
     val uniques = ArrayList<String>()
+    val uniqueObjects: List<Unique> by lazy { uniques.map { Unique(it) } }
 
     /** Natural Wonder weight: probability to be picked */
     var weight = 10