diff --git a/tetris/rulesets/extended_sega.lua b/tetris/rulesets/extended_sega.lua
new file mode 100644
index 0000000..1b1405d
--- /dev/null
+++ b/tetris/rulesets/extended_sega.lua
@@ -0,0 +1,32 @@
+local Sega = require 'tetris.rulesets.sega'
+
+local ExtendedSega = Sega:extend()
+
+ExtendedSega.name = "Extended Sega"
+ExtendedSega.hash = "ExtendedSega"
+
+function ExtendedSega:attemptWallkicks(piece, new_piece, rot_dir, grid)
+    if piece.shape == "I" or piece.shape == "O" then return end
+
+    local kick_dir = "none"
+
+    for _, offset in pairs(new_piece:getBlockOffsets()) do
+        if piece.position.x + offset.x < 0 then
+            kick_dir = "right"
+            break
+        elseif piece.position.x + offset.x >= grid.width then
+            kick_dir = "left"
+            break
+        end
+    end
+
+    if kick_dir == "none" then
+        return
+    elseif kick_dir == "right" and (grid:canPlacePiece(new_piece:withOffset({x=1, y=0}))) then
+		piece:setRelativeRotation(rot_dir):setOffset({x=1, y=0})
+	elseif kick_dir == "left" and (grid:canPlacePiece(new_piece:withOffset({x=-1, y=0}))) then
+		piece:setRelativeRotation(rot_dir):setOffset({x=-1, y=0})
+	end
+end
+
+return ExtendedSega
\ No newline at end of file
diff --git a/tetris/rulesets/mizu_rs.lua b/tetris/rulesets/mizu_rs.lua
index 8476622..b379fb7 100644
--- a/tetris/rulesets/mizu_rs.lua
+++ b/tetris/rulesets/mizu_rs.lua
@@ -20,23 +20,23 @@ MizuRS.colourscheme = {
 }
 
 MizuRS.spawn_positions = {
-	I = { x=5, y=2 },
-	J = { x=4, y=3 },
-	L = { x=4, y=3 },
-	O = { x=5, y=3 },
-	S = { x=4, y=3 },
-	T = { x=4, y=3 },
-	Z = { x=4, y=3 },
+	I = { x=5, y=4 },
+	J = { x=4, y=5 },
+	L = { x=4, y=5 },
+	O = { x=5, y=5 },
+	S = { x=4, y=5 },
+	T = { x=4, y=5 },
+	Z = { x=4, y=5 },
 }
 
 MizuRS.big_spawn_positions = {
-	I = { x=3, y=0 },
-	J = { x=2, y=1 },
-	L = { x=2, y=1 },
-	O = { x=3, y=1 },
-	S = { x=2, y=1 },
-	T = { x=2, y=1 },
-	Z = { x=2, y=1 },
+	I = { x=3, y=2 },
+	J = { x=2, y=3 },
+	L = { x=2, y=3 },
+	O = { x=3, y=3 },
+	S = { x=2, y=3 },
+	T = { x=2, y=3 },
+	Z = { x=2, y=3 },
 }
 
 MizuRS.block_offsets = {
diff --git a/tetris/rulesets/mob_deluxe.lua b/tetris/rulesets/mob_deluxe.lua
new file mode 100644
index 0000000..aaf10f6
--- /dev/null
+++ b/tetris/rulesets/mob_deluxe.lua
@@ -0,0 +1,198 @@
+local Piece = require 'tetris.components.piece'
+local Ruleset = require 'tetris.rulesets.ruleset'
+
+local SRS = Ruleset:extend()
+
+SRS.name = "MoB-Deluxe"
+SRS.hash = "Spiderman losing his grip"
+SRS.world = true
+SRS.colourscheme = {
+	I = "C",
+	L = "O",
+	J = "B",
+	S = "G",
+	Z = "R",
+	O = "Y",
+	T = "M",
+}
+SRS.softdrop_lock = false
+SRS.harddrop_lock = true
+
+SRS.spawn_positions = {
+	I = { x=5, y=4 },
+	J = { x=4, y=5 },
+	L = { x=4, y=5 },
+	O = { x=5, y=5 },
+	S = { x=4, y=5 },
+	T = { x=4, y=5 },
+	Z = { x=4, y=5 },
+}
+
+SRS.big_spawn_positions = {
+	I = { x=3, y=2 },
+	J = { x=2, y=3 },
+	L = { x=2, y=3 },
+	O = { x=3, y=3 },
+	S = { x=2, y=3 },
+	T = { x=2, y=3 },
+	Z = { x=2, y=3 },
+}
+
+SRS.block_offsets = {
+	I={
+		{ {x=0, y=0}, {x=-1, y=0}, {x=-2, y=0}, {x=1, y=0} },
+		{ {x=0, y=0}, {x=0, y=-1}, {x=0, y=1}, {x=0, y=2} },
+		{ {x=0, y=1}, {x=-1, y=1}, {x=-2, y=1}, {x=1, y=1} },
+		{ {x=-1, y=0}, {x=-1, y=-1}, {x=-1, y=1}, {x=-1, y=2} },
+	},
+	J={
+		{ {x=0, y=0}, {x=-1, y=0}, {x=1, y=0}, {x=-1, y=-1} },
+		{ {x=0, y=0}, {x=0, y=-1}, {x=0, y=1} , {x=1, y=-1} },
+		{ {x=0, y=0}, {x=1, y=0}, {x=-1, y=0}, {x=1, y=1} },
+		{ {x=0, y=0}, {x=0, y=1}, {x=0, y=-1}, {x=-1, y=1} },
+	},
+	L={
+		{ {x=0, y=0}, {x=-1, y=0}, {x=1, y=0}, {x=1, y=-1} },
+		{ {x=0, y=0}, {x=0, y=-1}, {x=0, y=1}, {x=1, y=1} },
+		{ {x=0, y=0}, {x=1, y=0}, {x=-1, y=0}, {x=-1, y=1} },
+		{ {x=0, y=0}, {x=0, y=1}, {x=0, y=-1}, {x=-1, y=-1} },
+	},
+	O={
+		{ {x=0, y=0}, {x=-1, y=0}, {x=-1, y=-1}, {x=0, y=-1} },
+		{ {x=0, y=0}, {x=-1, y=0}, {x=-1, y=-1}, {x=0, y=-1} },
+		{ {x=0, y=0}, {x=-1, y=0}, {x=-1, y=-1}, {x=0, y=-1} },
+		{ {x=0, y=0}, {x=-1, y=0}, {x=-1, y=-1}, {x=0, y=-1} },
+	},
+	S={
+		{ {x=1, y=-1}, {x=0, y=-1}, {x=0, y=0}, {x=-1, y=0} },
+		{ {x=1, y=1}, {x=1, y=0}, {x=0, y=0}, {x=0, y=-1} },
+		{ {x=-1, y=1}, {x=0, y=1}, {x=0, y=0}, {x=1, y=0} },
+		{ {x=-1, y=-1}, {x=-1, y=0}, {x=0, y=0}, {x=0, y=1} },
+	},
+	T={
+		{ {x=0, y=0}, {x=-1, y=0}, {x=1, y=0}, {x=0, y=-1} },
+		{ {x=0, y=0}, {x=0, y=-1}, {x=0, y=1}, {x=1, y=0} },
+		{ {x=0, y=0}, {x=1, y=0}, {x=-1, y=0}, {x=0, y=1} },
+		{ {x=0, y=0}, {x=0, y=1}, {x=0, y=-1}, {x=-1, y=0} },
+	},
+	Z={
+		{ {x=-1, y=-1}, {x=0, y=-1}, {x=0, y=0}, {x=1, y=0} },
+		{ {x=1, y=-1}, {x=1, y=0}, {x=0, y=0}, {x=0, y=1} },
+		{ {x=1, y=1}, {x=0, y=1}, {x=0, y=0}, {x=-1, y=0} },
+		{ {x=-1, y=1}, {x=-1, y=0}, {x=0, y=0}, {x=0, y=-1} },
+	}
+}
+
+SRS.wallkicks_3x3 = {
+	[0]={
+		[1]={{x=-1, y=0}, {x=-1, y=-1}},
+		[2]={},
+		[3]={{x=1, y=0}, {x=1, y=-1}},
+	},
+	[1]={
+		[0]={{x=1, y=0}, {x=1, y=1}},
+		[2]={{x=1, y=0}, {x=1, y=-1}},
+		[3]={},
+	},
+	[2]={
+		[0]={},
+		[1]={{x=-1, y=0}, {x=-1, y=1}},
+		[3]={{x=1, y=0}, {x=1, y=1}},
+	},
+	[3]={
+		[0]={{x=-1, y=0}, {x=-1, y=1}},
+		[1]={},
+		[2]={{x=-1, y=0}, {x=-1, y=-1}},
+	},
+};
+
+SRS.wallkicks_line = {
+	[0]={
+		[1]={{x=-1, y=0}, {x=-1, y=-1}, {x=1, y=0}, {x=1, y=1}},
+		[2]={},
+		[3]={{x=1, y=0}, {x=1, y=-1}, {x=-1, y=0}, {x=-1, y=-1}},
+	},
+	[1]={
+		[0]={{x=1, y=0}, {x=1, y=1}, {x=-1, y=0}, {x=-1, y=-1}},
+		[2]={{x=1, y=0}, {x=1, y=-1}, {x=-1, y=0}, {x=-1, y=1}},
+		[3]={},
+	},
+	[2]={
+		[0]={},
+		[1]={{x=-1, y=0}, {x=-1, y=1}, {x=1, y=0}, {x=1, y=-1}},
+		[3]={{x=1, y=0}, {x=1, y=1}, {x=-1, y=0}, {x=-1, y=-1}},
+	},
+	[3]={
+		[0]={{x=-1, y=0}, {x=-1, y=1}, {x=1, y=0}, {x=1, y=-1}},
+		[1]={},
+		[2]={{x=-1, y=0}, {x=-1, y=-1}, {x=1, y=0}, {x=1, y=1}},
+	},
+};
+
+-- Component functions.
+
+function SRS:attemptWallkicks(piece, new_piece, rot_dir, grid)
+
+	local kicks
+	if piece.shape == "O" then
+		return
+	elseif piece.shape == "I" then
+		kicks = SRS.wallkicks_line[piece.rotation][new_piece.rotation]
+	else
+		kicks = SRS.wallkicks_3x3[piece.rotation][new_piece.rotation]
+	end
+
+	assert(piece.rotation ~= new_piece.rotation)
+
+	for idx, offset in pairs(kicks) do
+		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
+
+function SRS:onPieceCreate(piece, grid)
+	piece.manipulations = 0
+	piece.rotations = 0
+end
+
+function SRS:onPieceDrop(piece, grid)
+	piece.lock_delay = 0 -- step reset
+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 >= 10 then
+			piece:dropToBottom(grid)
+			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 >= 8 then
+			piece:dropToBottom(grid)
+			piece.locked = true
+		end
+	end
+end
+
+function SRS:get180RotationValue() 
+	if config.gamesettings.world_reverse == 1 then
+		return 1
+	else
+		return 3
+	end
+end
+
+return SRS
diff --git a/tetris/rulesets/nintendo_r.lua b/tetris/rulesets/nintendo_r.lua
index a325124..2908caa 100644
--- a/tetris/rulesets/nintendo_r.lua
+++ b/tetris/rulesets/nintendo_r.lua
@@ -15,6 +15,16 @@ Nintendo.spawn_positions = {
 	Z = { x=4, y=5 },
 }
 
+Nintendo.big_spawn_positions = {
+	I = { x=3, y=2 },
+	J = { x=2, y=3 },
+	L = { x=2, y=3 },
+	O = { x=3, y=3 },
+	S = { x=2, y=3 },
+	T = { x=2, y=3 },
+	Z = { x=2, y=3 },
+}
+
 Nintendo.block_offsets = {
 	I={
 		{ {x=0, y=0}, {x=-1, y=0}, {x=-2, y=0}, {x=1, y=0} },
diff --git a/tetris/rulesets/pptprs.lua b/tetris/rulesets/pptprs.lua
index cac5f3f..804429d 100644
--- a/tetris/rulesets/pptprs.lua
+++ b/tetris/rulesets/pptprs.lua
@@ -7,13 +7,13 @@ PPTPRS.name = "PPTPRS"
 PPTPRS.hash = "Puyo Tetris Pentos"
 
 PPTPRS.spawn_positions = {
-	I = { x=5, y=2 },
-	J = { x=4, y=2 },
-	L = { x=4, y=2 },
-	O = { x=5, y=2 },
-	S = { x=4, y=3 },
-	T = { x=4, y=3 },
-	Z = { x=4, y=2 },
+	I = { x=5, y=4 },
+	J = { x=4, y=4 },
+	L = { x=4, y=4 },
+	O = { x=5, y=4 },
+	S = { x=4, y=5 },
+	T = { x=4, y=5 },
+	Z = { x=4, y=4 },
 }
 
 PPTPRS.block_offsets = {