diff --git a/Mods/vcmi/mod.json b/Mods/vcmi/mod.json
index 5c07c3150..4a4b58ba8 100644
--- a/Mods/vcmi/mod.json
+++ b/Mods/vcmi/mod.json
@@ -2,13 +2,20 @@
 	"name" : "VCMI essential files",
 	"description" : "Essential files required for VCMI to run correctly",
 
-	"version" : "1.0",
+	"version" : "1.1",
 	"author" : "VCMI Team",
 	"contact" : "http://forum.vcmi.eu/index.php",
 	"modType" : "Graphical",
+	
+	"factions" : [ "config/vcmi/towerFactions" ],
+	"creatures" : [ "config/vcmi/towerCreature" ],
 
 	"filesystem":
 	{
+		"CONFIG/" :
+		[
+			{"type" : "dir",  "path" : "/Config"}
+		],
 		"DATA/" :
 		[
 			{"type" : "dir",  "path" : "/Data"}
diff --git a/config/creatures/special.json b/config/creatures/special.json
index 58ce4ab86..8b724bcc6 100644
--- a/config/creatures/special.json
+++ b/config/creatures/special.json
@@ -123,8 +123,6 @@
 		},
 		"graphics" :
 		{
-			"iconSmall" : "vcmi/creatureIcons/towerSmall",
-			"iconLarge" : "vcmi/creatureIcons/towerLarge",
 			"animation": "CLCBOW.DEF" // needed to pass validation, never used
 		},
 		"sound": {}
diff --git a/config/factions/castle.json b/config/factions/castle.json
index 53a5c80a6..33a0006d8 100644
--- a/config/factions/castle.json
+++ b/config/factions/castle.json
@@ -203,8 +203,6 @@
 			"siege" :
 			{
 				"shooter" : "archer",
-				"towerIconSmall" : "vcmi/creatureIcons/towerSmall",
-				"towerIconLarge" : "vcmi/creatureIcons/towerLarge",
 				"imagePrefix" : "SGCS",
 				"gate" :
 				{
diff --git a/config/factions/conflux.json b/config/factions/conflux.json
index 26ca39a6c..e63a770ad 100644
--- a/config/factions/conflux.json
+++ b/config/factions/conflux.json
@@ -210,8 +210,6 @@
 			"siege" :
 			{
 				"shooter" : "stormElemental",
-				"towerIconSmall" : "vcmi/creatureIcons/towerSmall",
-				"towerIconLarge" : "vcmi/creatureIcons/towerLarge",
 				"imagePrefix" : "SGEL",
 				"gate" :
 				{
diff --git a/config/factions/dungeon.json b/config/factions/dungeon.json
index a47bf73f8..d03e436e6 100644
--- a/config/factions/dungeon.json
+++ b/config/factions/dungeon.json
@@ -204,8 +204,6 @@
 			"siege" :
 			{
 				"shooter" : "medusa",
-				"towerIconSmall" : "vcmi/creatureIcons/towerSmall",
-				"towerIconLarge" : "vcmi/creatureIcons/towerLarge",
 				"imagePrefix" : "SGDN",
 				"gate" :
 				{
diff --git a/config/factions/fortress.json b/config/factions/fortress.json
index 5b89a7bcf..cdfd9fb8f 100644
--- a/config/factions/fortress.json
+++ b/config/factions/fortress.json
@@ -209,8 +209,6 @@
 			"siege" :
 			{
 				"shooter" : "lizardman",
-				"towerIconSmall" : "vcmi/creatureIcons/towerSmall",
-				"towerIconLarge" : "vcmi/creatureIcons/towerLarge",
 				"imagePrefix" : "SGFR",
 				"gate" :
 				{
diff --git a/config/factions/inferno.json b/config/factions/inferno.json
index 8177bb212..bacb77cfa 100644
--- a/config/factions/inferno.json
+++ b/config/factions/inferno.json
@@ -204,8 +204,6 @@
 			"siege" :
 			{
 				"shooter" : "gog",
-				"towerIconSmall" : "vcmi/creatureIcons/towerSmall",
-				"towerIconLarge" : "vcmi/creatureIcons/towerLarge",
 				"imagePrefix" : "SGIN",
 				"gate" :
 				{
diff --git a/config/factions/necropolis.json b/config/factions/necropolis.json
index 268de5d5b..e7fe155d9 100644
--- a/config/factions/necropolis.json
+++ b/config/factions/necropolis.json
@@ -214,8 +214,6 @@
 			"siege" :
 			{
 				"shooter" : "lich",
-				"towerIconSmall" : "vcmi/creatureIcons/towerSmall",
-				"towerIconLarge" : "vcmi/creatureIcons/towerLarge",
 				"imagePrefix" : "SGNC",
 				"gate" :
 				{
diff --git a/config/factions/neutral.json b/config/factions/neutral.json
index 6a6abac52..8d8a7d2a2 100644
--- a/config/factions/neutral.json
+++ b/config/factions/neutral.json
@@ -2,7 +2,6 @@
 	"neutral" :
 	{
 		"name" : "Neutral",
-		"index" : 9,
 		"alignment" : "neutral",
 		"creatureBackground" :
 		{
diff --git a/config/factions/rampart.json b/config/factions/rampart.json
index 5da41b08e..c25deaec6 100644
--- a/config/factions/rampart.json
+++ b/config/factions/rampart.json
@@ -211,8 +211,6 @@
 			"siege" :
 			{
 				"shooter" : "woodElf",
-				"towerIconSmall" : "vcmi/creatureIcons/towerSmall",
-				"towerIconLarge" : "vcmi/creatureIcons/towerLarge",
 				"imagePrefix" : "SGRM",
 				"gate" :
 				{
diff --git a/config/factions/stronghold.json b/config/factions/stronghold.json
index a66490551..d4c7fba71 100644
--- a/config/factions/stronghold.json
+++ b/config/factions/stronghold.json
@@ -203,8 +203,6 @@
 			{
 				"shooter" : "orc",
 				"imagePrefix" : "SGST",
-				"towerIconSmall" : "vcmi/creatureIcons/towerSmall",
-				"towerIconLarge" : "vcmi/creatureIcons/towerLarge",
 				"gate" :
 				{
 					"arch" : { "x" : 478, "y" : 235 },
diff --git a/config/factions/tower.json b/config/factions/tower.json
index fca3dc149..89e93b34a 100644
--- a/config/factions/tower.json
+++ b/config/factions/tower.json
@@ -202,8 +202,6 @@
 			"siege" :
 			{
 				"shooter" : "mage",
-				"towerIconSmall" : "vcmi/creatureIcons/towerSmall",
-				"towerIconLarge" : "vcmi/creatureIcons/towerLarge",
 				"imagePrefix" : "SGTW",
 				"gate" :
 				{
diff --git a/config/schemas/mod.json b/config/schemas/mod.json
index 34aed68c3..b7cfab92b 100644
--- a/config/schemas/mod.json
+++ b/config/schemas/mod.json
@@ -56,6 +56,13 @@
 			"description": "List of mods that can't be enabled in the same time as this one",
 			"items": { "type":"string" }
 		},
+		"compatibility" : {
+			"type":"object",
+			"description": "List of supported version of vcmi engine",
+			"additionalProperties" : {
+				"type" : "string"
+			}
+		},
 
 		"keepDisabled" : {
 			"type":"boolean",
@@ -118,6 +125,12 @@
 			"description": "List of configuration files for battlefields",
 			"items": { "type":"string", "format" : "textFile" }
 
+		},
+		"obstacles":{
+			"type":"array",
+			"description": "List of configuration files for obstacles",
+			"items": { "type":"string", "format" : "textFile" }
+
 		},
 
 		"changelog" : {