diff --git a/core/src/com/unciv/logic/map/tile/Tile.kt b/core/src/com/unciv/logic/map/tile/Tile.kt
index 1c8e0f9cbd..dfd7874e26 100644
--- a/core/src/com/unciv/logic/map/tile/Tile.kt
+++ b/core/src/com/unciv/logic/map/tile/Tile.kt
@@ -484,8 +484,9 @@ open class Tile : IsPartOfGameInfoSerialization {
     /** Implements [UniqueParameterType.TileFilter][com.unciv.models.ruleset.unique.UniqueParameterType.TileFilter] */
     fun matchesFilter(filter: String, civInfo: Civilization? = null): Boolean {
         if (matchesTerrainFilter(filter, civInfo)) return true
-        if (improvement != null && !improvementIsPillaged && ruleset.tileImprovements[improvement]!!.matchesFilter(filter)) return true
-        return improvement == null && filter == "unimproved"
+        if ((improvement == null || improvementIsPillaged) && filter == "unimproved") return true
+        if (improvement != null && !improvementIsPillaged && filter == "improved") return true
+        return improvement != null && !improvementIsPillaged && ruleset.tileImprovements[improvement]!!.matchesFilter(filter)
     }
 
     fun matchesTerrainFilter(filter: String, observingCiv: Civilization? = null): Boolean {
@@ -495,7 +496,7 @@ open class Tile : IsPartOfGameInfoSerialization {
     /** Implements [UniqueParameterType.TerrainFilter][com.unciv.models.ruleset.unique.UniqueParameterType.TerrainFilter] */
     fun matchesSingleTerrainFilter(filter: String, observingCiv: Civilization? = null): Boolean {
         return when (filter) {
-            "All" -> true
+            "All", "Terrain" -> true
             baseTerrain -> true
             "Water" -> isWater
             "Land" -> isLand
@@ -510,6 +511,7 @@ open class Tile : IsPartOfGameInfoSerialization {
             "Enemy Land", "Enemy" -> observingCiv != null && isEnemyTerritory(observingCiv)
 
             resource -> observingCiv != null && hasViewableResource(observingCiv)
+            "resource" -> observingCiv != null && hasViewableResource(observingCiv)
             "Water resource" -> isWater && observingCiv != null && hasViewableResource(observingCiv)
             "Natural Wonder" -> naturalWonder != null
             "Featureless" -> terrainFeatures.isEmpty()
diff --git a/core/src/com/unciv/models/ruleset/unique/UniqueParameterType.kt b/core/src/com/unciv/models/ruleset/unique/UniqueParameterType.kt
index b390d7c75f..98aadf4c72 100644
--- a/core/src/com/unciv/models/ruleset/unique/UniqueParameterType.kt
+++ b/core/src/com/unciv/models/ruleset/unique/UniqueParameterType.kt
@@ -307,9 +307,9 @@ enum class UniqueParameterType(
     /** Implemented by [Tile.matchesTerrainFilter][com.unciv.logic.map.tile.Tile.matchesTerrainFilter] */
     TerrainFilter("terrainFilter", Constants.freshWaterFilter, null, "Terrain Filters") {
         private val knownValues = setOf(
-            "All",
-            Constants.coastal, Constants.river, "Open terrain", "Rough terrain", "Water resource",
-            "Foreign Land", "Foreign", "Friendly Land", "Friendly", "Enemy Land", "Enemy",
+            "All", "Terrain",
+            Constants.coastal, Constants.river, "Open terrain", "Rough terrain", "Water resource", 
+            "resource", "Foreign Land", "Foreign", "Friendly Land", "Friendly", "Enemy Land", "Enemy",
             "Featureless", Constants.freshWaterFilter, "non-fresh water", "Natural Wonder",
             "Impassable", "Land", "Water"
         ) +
@@ -337,7 +337,7 @@ enum class UniqueParameterType(
 
     /** Implemented by [Tile.matchesFilter][com.unciv.logic.map.tile.Tile.matchesFilter] */
     TileFilter("tileFilter", "Farm", "Anything that can be used either in an improvementFilter or in a terrainFilter can be used here, plus 'unimproved'", "Tile Filters") {
-        private val knownValues = setOf("unimproved", "All Road", "Great Improvement")
+        private val knownValues = setOf("unimproved", "improved", "All Road", "Great Improvement")
 
         override fun getErrorSeverity(parameterText: String, ruleset: Ruleset):
             UniqueType.UniqueParameterErrorSeverity? = getErrorSeverityForFilter(parameterText, ruleset)
diff --git a/docs/Modders/Unique-parameters.md b/docs/Modders/Unique-parameters.md
index 83c7e6dade..db66ca0eac 100644
--- a/docs/Modders/Unique-parameters.md
+++ b/docs/Modders/Unique-parameters.md
@@ -33,13 +33,9 @@ This is because to the player, the text will be `non-Wounded Armor units`, which
 
 Allows filtering for specific civs.
 
-- `All`
-- `City-states`
-- `Major`
 - `Human player`
 - `AI player`
-- Nation name
-- A unique a Nation has (verbatim, no placeholders)
+- [nationFilter](#nationfilter)
 
 ## nationFilter
 
@@ -205,6 +201,7 @@ This indicates the terrain on a single tile. The following values are allowed:
     - A [nationFilter](#nationfilter) matching the tile owner
 - Or the filter is a constant string choosing a derived test:
     - `All`
+    - `Terrain`
     - `Water`, `Land`
     - `Coastal` (at least one direct neighbor is a coast)
     - `River` (as in all 'river on tile' contexts, it means 'adjacent to a river on at least one side')
@@ -212,7 +209,7 @@ This indicates the terrain on a single tile. The following values are allowed:
     - `Friendly Land` - land belonging to you, or other civs with open borders to you
     - `Foreign Land` - any land that isn't friendly land
     - `Enemy land` - any land belonging to a civ you are at war with
-    - `Water resource`, `Strategic resource`, `Luxury resource`, `Bonus resource`
+    - `Water resource`, `Strategic resource`, `Luxury resource`, `Bonus resource`, `resource`
     - `Natural Wonder` (as opposed to above which means testing for a specific Natural Wonder by name, this tests for any of them)
 
 Please note all of these are _case-sensitive_.
@@ -227,7 +224,7 @@ Any of:
 
 - [terrainFilter](#terrainfilter) for this tile
 - [improvementFilter](#improvementfilter) for this tile
-- `Improvement` for tiles with any improvements
+- `Improvement` or `improved` for tiles with any improvements
 - `unimproved` for tiles with no improvement
 
 ## terrainQuality