diff --git a/android/assets/jsons/Civ V - Gods & Kings/Ruins.json b/android/assets/jsons/Civ V - Gods & Kings/Ruins.json
index 0864494b24..30be4cb693 100644
--- a/android/assets/jsons/Civ V - Gods & Kings/Ruins.json	
+++ b/android/assets/jsons/Civ V - Gods & Kings/Ruins.json	
@@ -20,7 +20,7 @@
     {
         "name": "your exploring unit receives training",
         "notification": "An ancient tribe trained us in their ways of combat!",
-        "uniques": ["This Unit gains [10] XP", "Only available after [10] turns"]
+        "uniques": ["This Unit gains [10] XP", "Only available <after [10] turns>"]
     },
     {
         "name": "survivors (adds population to a city)",
@@ -58,14 +58,14 @@
     {
         "name": "discover holy symbols",
         "notification": "We have found holy symbols in the ruins, giving us a deeper understanding of religion! (+[faithAmount] Faith)",
-        "uniques": ["Hidden when religion is disabled", "Gain enough Faith for a Pantheon", "Only available <before founding a Pantheon>", "Only available after [20] turns"],
+        "uniques": ["Hidden when religion is disabled", "Gain enough Faith for a Pantheon", "Only available <before founding a Pantheon>", "Only available <after [20] turns>"],
 		"color": "#CDDDF4"
     },
     {
         "name": "an ancient prophecy",
         "notification": "We have found an ancient prophecy in the ruins, greatly increasing our spiritual connection! (+[faithAmount] Faith)",
         "uniques": ["Hidden when religion is disabled", "Gain enough Faith for [33]% of a Great Prophet", "Hidden after generating a Great Prophet",
-            "Only available <after founding a Pantheon>", "Only available after [20] turns"],
+            "Only available <after founding a Pantheon>", "Only available <after [20] turns>"],
 		"color": "#CDDDF4"
     }
 ]
diff --git a/android/assets/jsons/Civ V - Vanilla/Ruins.json b/android/assets/jsons/Civ V - Vanilla/Ruins.json
index bc31c048d5..8ce2acae7d 100644
--- a/android/assets/jsons/Civ V - Vanilla/Ruins.json	
+++ b/android/assets/jsons/Civ V - Vanilla/Ruins.json	
@@ -20,7 +20,7 @@
     {
         "name": "your exploring unit receives training",
         "notification": "An ancient tribe trained us in their ways of combat!",
-        "uniques": ["This Unit gains [10] XP", "Only available after [10] turns"]
+        "uniques": ["This Unit gains [10] XP", "Only available <after [10] turns>"]
     },
     {
         "name": "survivors (adds population to a city)",
diff --git a/core/src/com/unciv/models/ruleset/unique/Unique.kt b/core/src/com/unciv/models/ruleset/unique/Unique.kt
index 4040f91f7f..26486deee5 100644
--- a/core/src/com/unciv/models/ruleset/unique/Unique.kt
+++ b/core/src/com/unciv/models/ruleset/unique/Unique.kt
@@ -142,6 +142,9 @@ class Unique(val text: String, val sourceObjectType: UniqueTarget? = null, val s
             UniqueType.ConditionalTimedUnique -> true
             UniqueType.ConditionalConsumeUnit -> true
 
+            UniqueType.ConditionalBeforeTurns -> state.civInfo != null && state.civInfo.gameInfo.turns < condition.params[0].toInt()
+            UniqueType.ConditionalAfterTurns -> state.civInfo != null && state.civInfo.gameInfo.turns >= condition.params[0].toInt()
+
             UniqueType.ConditionalChance -> stateBasedRandom.nextFloat() < condition.params[0].toFloat() / 100f
 
             UniqueType.ConditionalWar -> state.civInfo?.isAtWar() == true
diff --git a/core/src/com/unciv/models/ruleset/unique/UniqueType.kt b/core/src/com/unciv/models/ruleset/unique/UniqueType.kt
index 8c564f916b..27a7015772 100644
--- a/core/src/com/unciv/models/ruleset/unique/UniqueType.kt
+++ b/core/src/com/unciv/models/ruleset/unique/UniqueType.kt
@@ -585,6 +585,9 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     ConditionalConsumeUnit("by consuming this unit", UniqueTarget.Conditional),
     ConditionalChance("with [amount]% chance", UniqueTarget.Conditional),
 
+    ConditionalBeforeTurns("before [amount] turns", UniqueTarget.Conditional),
+    ConditionalAfterTurns("after [amount] turns", UniqueTarget.Conditional),
+
     /////// civ conditionals
     ConditionalWar("when at war", UniqueTarget.Conditional),
     ConditionalNotWar("when not at war", UniqueTarget.Conditional),
@@ -694,7 +697,7 @@ enum class UniqueType(val text: String, vararg targets: UniqueTarget, val flags:
     //endregion
 
     ///////////////////////////////////////////// region META /////////////////////////////////////////////
-
+    @Deprecated("as of 4.2.18", ReplaceWith("Only available <after [amount] turns>"))
     AvailableAfterCertainTurns("Only available after [amount] turns", UniqueTarget.Ruins),
     HiddenWithoutReligion("Hidden when religion is disabled", UniqueTarget.Unit, UniqueTarget.Building, UniqueTarget.Ruins, flags = UniqueFlag.setOfHiddenToUsers),
 
diff --git a/docs/Modders/uniques.md b/docs/Modders/uniques.md
index 0a151d9171..c4a608ab5c 100644
--- a/docs/Modders/uniques.md
+++ b/docs/Modders/uniques.md
@@ -1619,11 +1619,6 @@ Simple unique parameters are explained by mouseover. Complex parameters are expl
 ??? example  "This Unit upgrades for free including special upgrades"
 	Applicable to: Ruins
 
-??? example  "Only available after [amount] turns"
-	Example: "Only available after [3] turns"
-
-	Applicable to: Ruins
-
 ??? example  "Hidden after generating a Great Prophet"
 	Applicable to: Ruins
 
@@ -1665,6 +1660,16 @@ Simple unique parameters are explained by mouseover. Complex parameters are expl
 
 	Applicable to: Conditional
 
+??? example  "&lt;before [amount] turns&gt;"
+	Example: "&lt;before [3] turns&gt;"
+
+	Applicable to: Conditional
+
+??? example  "&lt;after [amount] turns&gt;"
+	Example: "&lt;after [3] turns&gt;"
+
+	Applicable to: Conditional
+
 ??? example  "&lt;when at war&gt;"
 	Applicable to: Conditional