diff --git a/tetris/rulesets/ds_world.lua b/tetris/rulesets/ds_world.lua
index d729e0d..fcc97a0 100644
--- a/tetris/rulesets/ds_world.lua
+++ b/tetris/rulesets/ds_world.lua
@@ -1,4 +1,4 @@
-local SRS = require 'tetris.rulesets.standard_exp'
+local SRS = require 'tetris.rulesets.standard'
 
 local DS = SRS:extend()
 
@@ -12,11 +12,7 @@ function DS:onPieceMove(piece) piece.lock_delay = 0 end
 function DS:onPieceRotate(piece) piece.lock_delay = 0 end
 
 function DS:get180RotationValue() 
-	if config.gamesettings.world_reverse == 1 then
-		return 1
-	else
-		return 3
-	end
+	return 3
 end
 
 return DS
\ No newline at end of file
diff --git a/tetris/rulesets/ears.lua b/tetris/rulesets/ears.lua
new file mode 100644
index 0000000..9333c3b
--- /dev/null
+++ b/tetris/rulesets/ears.lua
@@ -0,0 +1,42 @@
+local SRS = require 'tetris.rulesets.arika_srs'
+
+local EARS = SRS:extend()
+
+EARS.name = "E.A.R.S."
+EARS.hash = "EARS"
+
+EARS.colourscheme = {
+    I = "F",
+    J = "G",
+    L = "R",
+    O = "C",
+    S = "B",
+    T = "Y",
+    Z = "O",
+}
+
+function EARS:attemptWallkicks(piece, new_piece, rot_dir, grid)
+    for kd = 1, grid.height do
+        for x = -kd, kd do
+            tx = rot_dir == 3 and -x or x
+            for y = kd, -kd, -1 do
+                if math.abs(tx) + math.abs(y) == kd then
+                    offset = {x=tx, y=y}
+                    kicked_piece = new_piece:withOffset(offset)
+		            if grid:canPlacePiece(kicked_piece) then
+			            self:onPieceRotate(piece, grid)
+			            piece:setRelativeRotation(rot_dir)
+			            piece:setOffset(offset)
+			            return
+                    end
+                end
+            end
+        end
+    end
+end
+
+function EARS:get180RotationValue()
+    return 2
+end
+
+return EARS
\ No newline at end of file
diff --git a/tetris/rulesets/mob_deluxe.lua b/tetris/rulesets/mob_deluxe.lua
index aaf10f6..afa443d 100644
--- a/tetris/rulesets/mob_deluxe.lua
+++ b/tetris/rulesets/mob_deluxe.lua
@@ -188,11 +188,7 @@ function SRS:onPieceRotate(piece, grid)
 end
 
 function SRS:get180RotationValue() 
-	if config.gamesettings.world_reverse == 1 then
-		return 1
-	else
-		return 3
-	end
+	return 3
 end
 
 return SRS
diff --git a/tetris/rulesets/nintendo_r.lua b/tetris/rulesets/nintendo_r.lua
index 2908caa..4e59353 100644
--- a/tetris/rulesets/nintendo_r.lua
+++ b/tetris/rulesets/nintendo_r.lua
@@ -75,11 +75,7 @@ function Nintendo:onPieceDrop(piece)
 end
 
 function Nintendo:get180RotationValue() 
-	if config.gamesettings.world_reverse == 3 then
-		return 1
-	else
-		return 3
-	end
+	return 3
 end
 
 function Nintendo:getDefaultOrientation() return 3 end  -- downward facing pieces by default
diff --git a/tetris/rulesets/pptprs.lua b/tetris/rulesets/pptprs.lua
index 804429d..aa9e9b0 100644
--- a/tetris/rulesets/pptprs.lua
+++ b/tetris/rulesets/pptprs.lua
@@ -1,5 +1,5 @@
 local Piece = require 'tetris.components.piece'
-local SRS = require 'tetris.rulesets.standard_exp'
+local SRS = require 'tetris.rulesets.standard'
 
 local PPTPRS = SRS:extend()
 
diff --git a/tetris/rulesets/srs_x.lua b/tetris/rulesets/srs_x.lua
deleted file mode 100644
index 0d8c69c..0000000
--- a/tetris/rulesets/srs_x.lua
+++ /dev/null
@@ -1,54 +0,0 @@
-local Piece = require 'tetris.components.piece'
-local Ruleset = require 'tetris.rulesets.ti_srs'
-
-local SRS = Ruleset:extend()
-
-SRS.name = "SRS-X"
-SRS.hash = "Reversed SRS drop functions"
-SRS.softdrop_lock = true
-SRS.harddrop_lock = false
-
-SRS.colourscheme = {
-	I = "R",
-	L = "O",
-	J = "B",
-	S = "M",
-	Z = "G",
-	O = "Y",
-	T = "C",
-}
-
-SRS.MANIPULATIONS_MAX = 24
-SRS.ROTATIONS_MAX = 12
-
-function SRS:onPieceDrop(piece, grid)
-    if (piece.manipulations >= self.MANIPULATIONS_MAX or piece.rotations >= self.ROTATIONS_MAX) and piece:isDropBlocked(grid) then
-        piece.locked = true
-    else
-        piece.lock_delay = 0 -- step reset
-    end
-end
-
-function SRS:onPieceMove(piece, grid)
-	piece.lock_delay = 0 -- move reset
-	if piece:isDropBlocked(grid) then
-		piece.manipulations = piece.manipulations + 1
-		if piece.manipulations >= self.MANIPULATIONS_MAX then
-			piece.locked = true
-		end
-	end
-end
-
-function SRS:onPieceRotate(piece, grid)
-	piece.lock_delay = 0 -- rotate reset
-	if piece:isDropBlocked(grid) then
-        piece.rotations = piece.rotations + 1
-		if piece.rotations >= self.ROTATIONS_MAX then
-			piece.locked = true
-		end
-	end
-end
-
-function SRS:get180RotationValue() return 2 end
-
-return SRS
diff --git a/tetris/rulesets/thenew.lua b/tetris/rulesets/thenew.lua
index 290c862..1246243 100644
--- a/tetris/rulesets/thenew.lua
+++ b/tetris/rulesets/thenew.lua
@@ -117,11 +117,7 @@ function TheNew:onPieceDrop(piece, grid)
 end
 
 function TheNew:get180RotationValue() 
-	if config.gamesettings.world_reverse == 1 then
-		return 1
-	else
-		return 3
-	end
+	return 3
 end
 
 function TheNew:getDefaultOrientation() return 3 end