diff --git a/scene/replay.lua b/scene/replay.lua
index 2829d70..8507ec2 100644
--- a/scene/replay.lua
+++ b/scene/replay.lua
@@ -6,13 +6,15 @@ ReplayScene.title = "Replay"
 
 function ReplayScene:new(replay, game_mode, ruleset, inputs)
 	config.gamesettings = replay["gamesettings"]
+	love.math.setRandomSeed(replay["random_low"], replay["random_high"])
+	love.math.setRandomState(replay["random_state"])
+	self.retry_replay = replay
+	self.retry_mode = game_mode
+	self.retry_ruleset = ruleset
 	self.secret_inputs = inputs
 	self.game = game_mode(self.secret_inputs)
 	self.ruleset = ruleset(self.game)
-	-- Replace piece randomizer with replay piece sequence
-	local randomizer = Sequence()
-	randomizer.sequence = replay["pieces"]
-	self.game:initializeReplay(self.ruleset, randomizer)
+	self.game:initialize(self.ruleset, true)
 	self.inputs = {
 		left=false,
 		right=false,
@@ -26,7 +28,7 @@ function ReplayScene:new(replay, game_mode, ruleset, inputs)
 		hold=false,
 	}
 	self.paused = false
-	self.replay = replay
+	self.replay = deepcopy(replay)
 	self.replay_index = 1
 	DiscordRPC:update({
 		details = "Viewing a replay",
@@ -56,15 +58,27 @@ end
 
 function ReplayScene:render()
 	self.game:draw(self.paused)
+	love.graphics.setColor(1, 1, 1, 1)
 	love.graphics.setFont(font_3x5_3)
 	love.graphics.printf("REPLAY", 0, 0, 635, "right")
 end
 
 function ReplayScene:onInputPress(e)
-	if (e.input == "menu_back") then
+	if (
+		e.input == "menu_back" or
+		e.input == "menu_decide" or
+		e.input == "retry"
+ 	) then
 		self.game:onExit()
 		loadSave()
-		scene = ReplaySelectScene()
+		love.math.setRandomSeed(os.time())
+		scene = (
+			(e.input == "retry") and
+			ReplayScene(
+				self.retry_replay, self.retry_mode,
+				self.retry_ruleset, self.secret_inputs
+			) or ReplaySelectScene()
+	 	)
 	elseif e.input == "pause" and not (self.game.game_over or self.game.completed) then
 		self.paused = not self.paused
 		if self.paused then pauseBGM()
diff --git a/scene/settings.lua b/scene/settings.lua
index c9663aa..eaa7361 100644
--- a/scene/settings.lua
+++ b/scene/settings.lua
@@ -20,7 +20,7 @@ function SettingsScene:new()
     self.menu_state = 1
     DiscordRPC:update({
         details = "In settings",
-        state = settingsidle[math.random(#settingsidle)],
+        state = settingsidle[love.math.random(#settingsidle)],
         largeImageKey = "settings",
     })
 end
diff --git a/scene/title.lua b/scene/title.lua
index 6f111dc..3b06a92 100644
--- a/scene/title.lua
+++ b/scene/title.lua
@@ -44,7 +44,7 @@ function TitleScene:new()
 	self.text_flag = false
 	DiscordRPC:update({
 		details = "In menus",
-		state = mainmenuidle[math.random(#mainmenuidle)],
+		state = mainmenuidle[love.math.random(#mainmenuidle)],
 		largeImageKey = "1year",
 		largeImageText = version.." | Thanks for 1 year!"
 	})
diff --git a/tetris/modes/gamemode.lua b/tetris/modes/gamemode.lua
index 538877d..6cb49aa 100644
--- a/tetris/modes/gamemode.lua
+++ b/tetris/modes/gamemode.lua
@@ -17,6 +17,12 @@ GameMode.tagline = ""
 GameMode.rollOpacityFunction = function(age) return 0 end
 
 function GameMode:new(secret_inputs)
+	self.replay_inputs = {}
+	self.random_low, self.random_high = love.math.getRandomSeed()
+	self.random_state = love.math.getRandomState()
+	self.secret_inputs = secret_inputs
+	self.save_replay = true
+	
 	self.grid = Grid(10, 24)
 	self.randomizer = Randomizer()
 	self.piece = nil
@@ -73,10 +79,6 @@ function GameMode:new(secret_inputs)
 	self.section_start_time = 0
 	self.section_times = { [0] = 0 }
 	self.secondary_section_times = { [0] = 0 }
-	self.replay_inputs = {}
-	self.secret_inputs = secret_inputs
-	self.replay_pieces = {}
-	self.save_replay = true
 end
 
 function GameMode:getARR() return 1 end
@@ -91,9 +93,6 @@ function GameMode:getGravity() return 1/64 end
 
 function GameMode:getNextPiece(ruleset)
 	local shape = self.used_randomizer:nextPiece()
-	if self.save_replay then
-		self.replay_pieces[#self.replay_pieces + 1] = shape
-	end
 	return {
 		skin = self:getSkin(),
 		shape = shape,
@@ -105,16 +104,7 @@ function GameMode:getSkin()
 	return "2tie"
 end
 
-function GameMode:sharedInitialize(ruleset)
-	self.ruleset = ruleset
-	for i = 1, math.max(self.next_queue_length, 1) do
-		table.insert(self.next_queue, self:getNextPiece(ruleset))
-	end
-	self.lock_on_soft_drop = ({ruleset.softdrop_lock, self.instant_soft_drop, false, true})[config.gamesettings.manlock]
-	self.lock_on_hard_drop = ({ruleset.harddrop_lock, self.instant_hard_drop, true,  false})[config.gamesettings.manlock]
-end
-
-function GameMode:initialize(ruleset)
+function GameMode:initialize(ruleset, replay)
 	-- generate next queue
 	self.used_randomizer = (
 		table.equalvalues(
@@ -123,20 +113,22 @@ function GameMode:initialize(ruleset)
 		) and
 		self.randomizer or BagRandomizer(table.keys(ruleset.colourscheme))
 	)
-	self:sharedInitialize(ruleset)
-end
-
-function GameMode:initializeReplay(ruleset, randomizer)
-	self.used_randomizer = randomizer
-	self.save_replay = false
-	self:sharedInitialize(ruleset)
+	self.ruleset = ruleset
+	self.save_replay = not replay
+	for i = 1, math.max(self.next_queue_length, 1) do
+		table.insert(self.next_queue, self:getNextPiece(ruleset))
+	end
+	self.lock_on_soft_drop = ({ruleset.softdrop_lock, self.instant_soft_drop, false, true})[config.gamesettings.manlock]
+	self.lock_on_hard_drop = ({ruleset.harddrop_lock, self.instant_hard_drop, true,  false})[config.gamesettings.manlock]
 end
 
 function GameMode:saveReplay()
 	-- Save replay.
 	local replay = {}
 	replay["inputs"] = self.replay_inputs
-	replay["pieces"] = self.replay_pieces
+	replay["random_low"] = self.random_low
+	replay["random_high"] = self.random_high
+	replay["random_state"] = self.random_state
 	replay["mode"] = self.name
 	replay["ruleset"] = self.ruleset.name
 	replay["timer"] = self.frames
diff --git a/tetris/randomizers/bag.lua b/tetris/randomizers/bag.lua
index e7a60bc..670ea90 100644
--- a/tetris/randomizers/bag.lua
+++ b/tetris/randomizers/bag.lua
@@ -13,7 +13,7 @@ function BagRandomizer:generatePiece()
             table.insert(self.bag, v)
         end
 	end
-	local x = math.random(table.getn(self.bag))
+	local x = love.math.random(table.getn(self.bag))
 	return table.remove(self.bag, x)
 end
 
diff --git a/tetris/randomizers/bag7.lua b/tetris/randomizers/bag7.lua
index e758a63..5797c8b 100644
--- a/tetris/randomizers/bag7.lua
+++ b/tetris/randomizers/bag7.lua
@@ -10,7 +10,7 @@ function Bag7Randomizer:generatePiece()
 	if next(self.bag) == nil then
 		self.bag = {"I", "J", "L", "O", "S", "T", "Z"}
 	end
-	local x = math.random(table.getn(self.bag))
+	local x = love.math.random(table.getn(self.bag))
 	return table.remove(self.bag, x)
 end
 
diff --git a/tetris/randomizers/bag7noSZOstart.lua b/tetris/randomizers/bag7noSZOstart.lua
index 266a371..26fd8aa 100644
--- a/tetris/randomizers/bag7noSZOstart.lua
+++ b/tetris/randomizers/bag7noSZOstart.lua
@@ -6,7 +6,7 @@ function Bag7NoSZOStartRandomizer:shuffleBag()
 	local b = self.bag
 	local ln = #b
 	for i = 1, ln do
-		local j = math.random(i, ln)
+		local j = love.math.random(i, ln)
 		b[i], b[j] = b[j], b[i]
 	end
 end
diff --git a/tetris/randomizers/history_4rolls.lua b/tetris/randomizers/history_4rolls.lua
index e598358..a562910 100644
--- a/tetris/randomizers/history_4rolls.lua
+++ b/tetris/randomizers/history_4rolls.lua
@@ -10,11 +10,11 @@ end
 function History4RollsRandomizer:generatePiece()
 	if self.first then
 		self.first = false
-		return self:updateHistory(({"L", "J", "I", "T"})[math.random(4)])
+		return self:updateHistory(({"L", "J", "I", "T"})[love.math.random(4)])
 	else
 		local shapes = {"I", "J", "L", "O", "S", "T", "Z"}
 		for i = 1, 4 do
-			local x = math.random(7)
+			local x = love.math.random(7)
 			if not inHistory(shapes[x], self.history) or i == 4 then
 				return self:updateHistory(shapes[x])
 			end
diff --git a/tetris/randomizers/history_6rolls.lua b/tetris/randomizers/history_6rolls.lua
index 44c2d41..b20bfb8 100644
--- a/tetris/randomizers/history_6rolls.lua
+++ b/tetris/randomizers/history_6rolls.lua
@@ -10,11 +10,11 @@ end
 function History6RollsRandomizer:generatePiece()
 	if self.first then
 		self.first = false
-		return self:updateHistory(({"L", "J", "I", "T"})[math.random(4)])
+		return self:updateHistory(({"L", "J", "I", "T"})[love.math.random(4)])
 	else
 		local shapes = {"I", "J", "L", "O", "S", "T", "Z"}
 		for i = 1, 6 do
-			local x = math.random(7)
+			local x = love.math.random(7)
 			if not inHistory(shapes[x], self.history) or i == 6 then
 				return self:updateHistory(shapes[x])
 			end
diff --git a/tetris/randomizers/history_6rolls_35bag.lua b/tetris/randomizers/history_6rolls_35bag.lua
index 123cc3b..c07f1ce 100644
--- a/tetris/randomizers/history_6rolls_35bag.lua
+++ b/tetris/randomizers/history_6rolls_35bag.lua
@@ -28,12 +28,12 @@ end
 function History6Rolls35PoolRandomizer:generatePiece()
 	local index, x
 	if self.first then
-		index = math.random(20)
+		index = love.math.random(20)
 		x = self.pool[index]
 		self.first = false
 	else
 		for i = 1, 6 do
-			index = math.random(#self.pool)
+			index = love.math.random(#self.pool)
 			x = self.pool[index]
 			if not inHistory(x, self.history) or i == 6 then
 				break
diff --git a/tetris/randomizers/randomizer.lua b/tetris/randomizers/randomizer.lua
index aa0931f..d8dc9c0 100644
--- a/tetris/randomizers/randomizer.lua
+++ b/tetris/randomizers/randomizer.lua
@@ -16,7 +16,7 @@ function Randomizer:initialize()
 end
 
 function Randomizer:generatePiece()
-	return self.possible_pieces[math.random(7)]
+	return self.possible_pieces[love.math.random(7)]
 end
 
 return Randomizer