diff --git a/regression/regression/main.nut b/regression/regression/main.nut
index 3fd5a584ae..0e2fc07fe6 100644
--- a/regression/regression/main.nut
+++ b/regression/regression/main.nut
@@ -2300,6 +2300,67 @@ function Regression::PriorityQueue()
 	print("  Count():      " + queue.Count());
 }
 
+function Regression::Terraforming()
+{
+	print("");
+	print("--Terraforming--");
+	print("  DemolishTile():       " + AITile.DemolishTile(4033));
+	print("  DemolishTile():       " + AITile.DemolishTile(60766));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  LowerTile():          " + AITile.LowerTile(8205, AITile.SLOPE_ENW));
+	print("  RaiseTile():          " + AITile.RaiseTile(8205, AITile.SLOPE_ENW));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  LowerTile():          " + AITile.LowerTile(8205, AITile.SLOPE_ENW));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  LowerTile():          " + AITile.LowerTile(4113, AITile.SLOPE_SW));
+	print("  RaiseTile():          " + AITile.RaiseTile(5902, AITile.SLOPE_NE));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  RaiseTile():          " + AITile.RaiseTile(7958, AITile.SLOPE_SE));
+	print("  LowerTile():          " + AITile.LowerTile(7958, AITile.SLOPE_NE));
+	print("  LowerTile():          " + AITile.LowerTile(7958, AITile.SLOPE_SE));
+	print("  RaiseTile():          " + AITile.RaiseTile(7958, AITile.SLOPE_SE));
+	print("  LowerTile():          " + AITile.LowerTile(7958, AITile.SLOPE_EW));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  LowerTile():          " + AITile.LowerTile(33924, AITile.SLOPE_ELEVATED));
+	print("  LowerTile():          " + AITile.LowerTile(33923, AITile.SLOPE_ELEVATED));
+	print("  RaiseTile():          " + AITile.RaiseTile(34193, AITile.SLOPE_ELEVATED));
+	print("  LowerTile():          " + AITile.LowerTile(34193, AITile.SLOPE_ELEVATED));
+	print("  LowerTile():          " + AITile.LowerTile(34192, AITile.SLOPE_NE));
+	print("  RaiseTile():          " + AITile.RaiseTile(34193, AITile.SLOPE_ELEVATED));
+	print("  LowerTile():          " + AITile.LowerTile(34192, AITile.SLOPE_NE));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  RaiseTile():          " + AITile.RaiseTile(5687, AITile.SLOPE_N));
+	print("  LowerTile():          " + AITile.LowerTile(5687, AITile.SLOPE_SE));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  RaiseTile():          " + AITile.RaiseTile(23596, AITile.SLOPE_NE));
+	print("  LowerTile():          " + AITile.LowerTile(23596, AITile.SLOPE_NE));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  RaiseTile():          " + AITile.RaiseTile(28536, AITile.SLOPE_E));
+	print("  RaiseTile():          " + AITile.RaiseTile(28536, AITile.SLOPE_E));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  LevelTiles():         " + AITile.LevelTiles(28536, 29053));
+	print("  LevelTiles():         " + AITile.LevelTiles(28536, 29053));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  LevelTiles():         " + AITile.LevelTiles(22348, 24405));
+	print("  LevelTiles():         " + AITile.LevelTiles(27717, 29772));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  LowerTile():          " + AITile.LowerTile(61534, AITile.SLOPE_W));
+	print("  RaiseTile():          " + AITile.RaiseTile(61534, AITile.SLOPE_NE));
+	print("  RaiseTile():          " + AITile.RaiseTile(61534, AITile.SLOPE_N));
+	print("  LowerTile():          " + AITile.LowerTile(61534, AITile.SLOPE_W));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  RaiseTile():          " + AITile.RaiseTile(61534, AITile.SLOPE_N));
+	print("  LowerTile():          " + AITile.LowerTile(61533, AITile.SLOPE_E));
+	print("  LowerTile():          " + AITile.LowerTile(61534, AITile.SLOPE_E));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+	print("  RaiseTile():          " + AITile.RaiseTile(4033, AITile.SLOPE_S));
+	print("  LowerTile():          " + AITile.LowerTile(4033, AITile.SLOPE_S));
+	print("  LowerTile():          " + AITile.LowerTile(4033, AITile.SLOPE_E));
+	print("  RaiseTile():          " + AITile.RaiseTile(4033, AITile.SLOPE_E));
+	print("  RaiseTile():          " + AITile.RaiseTile(4033, AITile.SLOPE_NWS));
+	print("  GetBankBalance():     " + AICompany.GetBankBalance(AICompany.COMPANY_SELF));
+}
+
 function Regression::Start()
 {
 	this.TestInit();
@@ -2398,6 +2459,7 @@ function Regression::Start()
 
 	this.Math();
 	this.PriorityQueue();
+	this.Terraforming();
 
 	/* Check Valuate() is actually limited, MUST BE THE LAST TEST. */
 	print("--Valuate() with excessive CPU usage--")
diff --git a/regression/regression/result.txt b/regression/regression/result.txt
index 7f40bc2b23..11fffce1b9 100644
--- a/regression/regression/result.txt
+++ b/regression/regression/result.txt
@@ -10872,6 +10872,63 @@ ERROR: IsEnd() is invalid as Begin() is never called
   Clear():      (null : 0x00000000)
   IsEmpty():    true
   Count():      0
+
+--Terraforming--
+  DemolishTile():       true
+  DemolishTile():       true
+  GetBankBalance():     1999216685
+  LowerTile():          false
+  RaiseTile():          true
+  GetBankBalance():     1999156124
+  LowerTile():          true
+  GetBankBalance():     1999155563
+  LowerTile():          true
+  RaiseTile():          true
+  GetBankBalance():     1999124603
+  RaiseTile():          false
+  LowerTile():          false
+  LowerTile():          true
+  RaiseTile():          true
+  LowerTile():          true
+  GetBankBalance():     1999122125
+  LowerTile():          false
+  LowerTile():          true
+  RaiseTile():          false
+  LowerTile():          true
+  LowerTile():          false
+  RaiseTile():          true
+  LowerTile():          true
+  GetBankBalance():     1999116574
+  RaiseTile():          true
+  LowerTile():          true
+  GetBankBalance():     1999100519
+  RaiseTile():          false
+  LowerTile():          true
+  GetBankBalance():     1999098443
+  RaiseTile():          true
+  RaiseTile():          true
+  GetBankBalance():     1999088221
+  LevelTiles():         true
+  LevelTiles():         false
+  GetBankBalance():     1999078593
+  LevelTiles():         true
+  LevelTiles():         true
+  GetBankBalance():     1998792514
+  LowerTile():          false
+  RaiseTile():          true
+  RaiseTile():          false
+  LowerTile():          true
+  GetBankBalance():     1998786415
+  RaiseTile():          true
+  LowerTile():          true
+  LowerTile():          false
+  GetBankBalance():     1998785248
+  RaiseTile():          false
+  LowerTile():          true
+  LowerTile():          false
+  RaiseTile():          false
+  RaiseTile():          true
+  GetBankBalance():     1998738752
 --Valuate() with excessive CPU usage--
 constructor failed with: excessive CPU usage in list filter function
 Your script made an error: excessive CPU usage in valuator function
@@ -10880,7 +10937,7 @@ CALLSTACK WITH LOCALS
 *FUNCTION [Valuate()] Valuate line [5]
   [args] ARRAY
   [this] INSTANCE
-*FUNCTION [Start()] regression/main.nut line [2412]
+*FUNCTION [Start()] regression/main.nut line [2474]
   [Infinite] CLOSURE
   [list] INSTANCE
   [this] INSTANCE