diff --git a/tetris/modes/highstacker.lua b/tetris/modes/highstacker.lua
new file mode 100644
index 0000000..301144f
--- /dev/null
+++ b/tetris/modes/highstacker.lua
@@ -0,0 +1,569 @@
+require 'funcs'
+
+local GameMode = require 'tetris.modes.gamemode'
+local Piece = require 'tetris.components.piece'
+
+local Bag7NoSZOStartRandomizer = require 'tetris.randomizers.bag7noSZOstart'
+
+local HighStackerGame = GameMode:extend()
+
+HighStackerGame.name = "High Stacker"
+HighStackerGame.hash = "HighStacker"
+HighStackerGame.tagline = "Play risky on the higher fields and don't be a chicken!"
+
+--Official Release v1.0
+--Concept & Coding by Xx_Henry_xX (Xx_Henry_xX#0296)
+--Code mostly & shamelessly stolen from...
+	--Marathon A2 / A3
+	--Survival 2020
+--[[
+	changelog
+	Official Release v1.0
+	-2'-ALL ending appearing on other ALLs fixed
+	-transition bug is fixed AT LAST!!!!!!!!!!!!!
+
+	Official Release v0.2
+	-null piece bug fixed
+	-some pointless bool == bool stuffs edited
+
+	Official Release v0.1
+	-total delay is now ura loop 2 exclusive
+	-edited total delay values
+	-end of game bonus details added
+	-2'-ALL ending added
+	-roll bgm added
+
+	Discord Beta v2.0
+	-scoring rehaul (mostly on REN)
+	-slot is gone
+	-current section score & section cool requirement display added
+
+	Discord Beta v1.2
+	-adjusted section cool cutoffs and ura 2nd loop cutoff
+	-fixed end of game bonus being given endlessly (kudos 2 infinifen#1129)
+
+	Discord Beta v1.1
+	-bugfixes on section score text color
+	-end of game bonus added
+
+	Discord Beta v1.0
+	-initial semi-public release
+]]
+
+function HighStackerGame:new()
+	HighStackerGame.super:new()
+
+	self.roll_frames = 0
+	self.combo = 0
+	self.randomizer = Bag7NoSZOStartRandomizer()
+	self.grade = 0
+	self.grade_points = 0
+	self.grade_point_decay_counter = 0
+	self.section_start_score = 0
+	self.section_scores = { [0] = 0 }
+	self.loop = 0 --0 == loop 1 / 1 == omote / 2 == ura
+	self.total_lines = 0
+	self.section_cools = 0
+	self.cool_timer = 0
+	self.ground_touched = false
+	self.total_delay = 300
+	self.show_loop = false
+	self.actually_cue_the_rolls = false
+	self.ren_on = false
+
+	self.line_details = { }
+	self.line_details_second = { }
+	self.detail_timer = 0
+	self.ending = 0
+	self.clear_bonus_given = false
+
+	--debug
+	--[[
+	self.level = 499
+	self.section_cools = 4
+	self.score = 50000000
+	self.section_scores = {
+		[0] = 10000000,
+		[1] = 10000000,
+		[2] = 10000000,
+		[3] = 10000000
+	}
+	]]
+	
+	self.additive_gravity = false
+	self.lock_drop = false
+	self.lock_hard_drop = false
+	self.enable_hold = true
+	self.next_queue_length = 3
+end
+
+function HighStackerGame:getARE()
+		if self.level < 700 then return 27
+	elseif self.level < 800 then return 18
+	else return 14 end
+end
+
+function HighStackerGame:getLineARE()
+		if self.level < 600 then return 27
+	elseif self.level < 700 then return 18
+	elseif self.level < 800 then return 14
+	else return 8 end
+end
+
+function HighStackerGame:getDasLimit()
+		if self.level < 500 then return 15
+	elseif self.level < 900 then return 9
+	else return 7 end
+end
+
+function HighStackerGame:getLineClearDelay()
+		if self.level < 500 then return 40
+	elseif self.level < 600 then return 25
+	elseif self.level < 700 then return 16
+	elseif self.level < 800 then return 12
+	else return 6 end
+end
+
+function HighStackerGame:getLockDelay()
+		if self.level < 900 then return 30
+	else return 17 end
+end
+
+function HighStackerGame:getGravity()
+		if (self.level < 30)  then return 4/256
+	elseif (self.level < 35)  then return 6/256
+	elseif (self.level < 40)  then return 8/256
+	elseif (self.level < 50)  then return 10/256
+	elseif (self.level < 60)  then return 12/256
+	elseif (self.level < 70)  then return 16/256
+	elseif (self.level < 80)  then return 32/256
+	elseif (self.level < 90)  then return 48/256
+	elseif (self.level < 100) then return 64/256
+	elseif (self.level < 120) then return 80/256
+	elseif (self.level < 140) then return 96/256
+	elseif (self.level < 160) then return 112/256
+	elseif (self.level < 170) then return 128/256
+	elseif (self.level < 200) then return 144/256
+	elseif (self.level < 220) then return 4/256
+	elseif (self.level < 230) then return 32/256
+	elseif (self.level < 233) then return 64/256
+	elseif (self.level < 236) then return 96/256
+	elseif (self.level < 239) then return 128/256
+	elseif (self.level < 243) then return 160/256
+	elseif (self.level < 247) then return 192/256
+	elseif (self.level < 251) then return 224/256
+	elseif (self.level < 300) then return 1
+	elseif (self.level < 330) then return 2
+	elseif (self.level < 360) then return 3
+	elseif (self.level < 400) then return 4
+	elseif (self.level < 420) then return 5
+	elseif (self.level < 450) then return 4
+	elseif (self.level < 500) then return 3
+	else return 20
+	end
+end
+
+function HighStackerGame:getTotalDelay()
+		if self.loop ~= 2 then return 300
+	elseif self.level < 530 then return 270
+	elseif self.level < 600 then return 240
+	elseif self.level < 700 then return 210
+	elseif self.level < 800 then return 180
+	elseif self.level < 900 then return 150
+	else return 120 end
+end
+
+function HighStackerGame:advanceOneFrame()
+	if self.clear then
+		self.roll_frames = self.roll_frames + 1
+		if not self.actually_cue_the_rolls then
+			if self.roll_frames < -120 then
+				return false
+			elseif self.roll_frames >= 0 then
+				if self.loop ~= 0 then
+					self.clear = false
+					self.ready_frames = 100
+					self.show_loop = true
+				end
+				return true
+			end
+			return false
+		elseif self.roll_frames < 0 then
+			if self.roll_frames + 1 == 0 then
+				switchBGM("credit_roll", "gm3")
+			end
+			return false
+		elseif self.roll_frames > 3701 then
+			self.completed = true
+			switchBGM(nil)
+		end
+	elseif self.ready_frames == 0 then
+		self.frames = self.frames + 1
+		if self.piece ~= nil then
+			if self.ground_touched and self.loop == 2 then
+				self.total_delay = self.total_delay + 1
+				if self.total_delay >= self:getTotalDelay() and self.piece:isDropBlocked(self.grid) then
+					self.piece.locked = true
+				end
+			elseif self.piece:isDropBlocked(self.grid) then self.ground_touched = true end
+		end
+	end
+	if self.detail_timer > 0 then
+		self.detail_timer = self.detail_timer - 1
+	end
+	return true
+end
+
+function HighStackerGame:onPieceEnter()
+	self.total_delay = 0
+	self.ground_touched = false
+	if (self.level % 100 ~= 99) and not self.clear and self.frames ~= 0 and not self.ren_on then
+		self.level = self.level + 1
+	end
+end
+
+local line_count_multiplier = {1, 2, 4, 6}
+local line_position_score = {
+	15000,
+	15000,
+	15000,
+	15000, --lowest off-field row
+	15000,
+	10000,
+	9000,
+	8000,
+	7000,
+	6000,
+	5000,
+	4000,
+	3000,
+	2000,
+	1000,
+	900,
+	800,
+	700,
+	600,
+	500,
+	40,
+	30,
+	20,
+	10
+}
+
+function HighStackerGame:updateScore(level, drop_bonus, cleared_lines)
+	local ae, cleared_lines_table = self.grid:getClearedRowCount()
+	self.total_lines = self.total_lines + cleared_lines
+	if cleared_lines > 0 then
+		self.detail_timer = 120
+		self.line_details = { }
+		self.line_details_second = { }
+		local basescore = self.combo
+		local levelscore = self.level * 10
+		table.insert(self.line_details_second, levelscore)
+		if basescore > 0 then 
+			table.insert(self.line_details_second, basescore)
+			self.ren_on = true
+		end
+		if self.loop == 1 then levelscore = levelscore - 5000 end
+		basescore = basescore + levelscore
+		for key, pos in ipairs(cleared_lines_table) do
+			basescore = basescore + line_position_score[pos]
+			table.insert(self.line_details, line_position_score[pos])
+		end
+		self.score = self.score + basescore * line_count_multiplier[cleared_lines]
+		self.combo = basescore
+		
+	else
+		self.combo = 0
+		self.ren_on = false
+	end
+	self.drop_bonus = 0
+	if self.clear then self.lines = self.lines + cleared_lines end --reminder that this is for roll lines
+end
+
+function HighStackerGame:onLineClear(cleared_row_count)
+	if self.ren_on == false then
+		self:updateSectionScores(self.level, self.level + cleared_row_count)
+		self.level = math.min(self.level + cleared_row_count, 1000)
+	end
+	if self.level >= 500 and not self.clear and self.loop == 0 then
+		self.level = 500
+		self.clear = true
+		self.grid:clear()
+		self.roll_frames = -150
+		if self:nextloopcheck() then
+			self.roll_frames = self.roll_frames - 120
+			self.lcd = 0
+			self.are = 0
+		else
+			self.actually_cue_the_rolls = true
+		end
+	elseif self.level == 1000 and not self.clear then
+		self.clear = true
+		self.grid:clear()
+		self.actually_cue_the_rolls = true
+		self.roll_frames = -150
+	end
+	self.lock_drop = self.level >= 900
+	self.lock_hard_drop = self.level >= 900
+end
+
+local lowest_section_cool_cutoff = 800000
+
+function HighStackerGame:updateSectionScores(old_level, new_level)
+	if self.clear or self.loop ~= 0 then return end
+	if math.floor(old_level / 100) < math.floor(new_level / 100) or
+	new_level >= 500 then
+		-- record new section
+		section_score = self.score - self.section_start_score
+		self.section_scores[math.floor(old_level / 100)] = section_score
+		self.section_start_score = self.score
+		if self.loop == 0 then
+			if section_score >= lowest_section_cool_cutoff + 50000 * (math.floor(old_level / 100) + self.section_cools) then
+				self.section_cools = self.section_cools + 1
+				self.cool_timer = 300
+			end
+		end
+	end
+end
+
+function HighStackerGame:nextloopcheck()
+	if not self.clear then return false end
+	if self.section_cools >= 5 and self.score >= 6000000 then
+		self.loop = 2
+		return true
+	elseif self.section_cools >= 3 and self.score >= 4000000 then
+		self.loop = 1
+		return true
+	end
+	return false
+end
+
+function HighStackerGame:getSkin()
+	return (self.level >= 701 and self.loop == 2) and "bone" or "2tie"
+end
+
+function HighStackerGame:onGameComplete()
+	if not self.clear_bonus_given then
+		self.clear_bonus_given = true
+		if self.loop == 2 then
+			self.score = self.score + self.total_lines * 100 + self.lines * 1000
+		elseif self.loop == 1 then
+			self.score = self.score + self.total_lines * 100 + self.lines * 500
+		else
+			self.score = self.score + self.total_lines * 10 + self.lines * 100
+		end
+	end
+	self:onGameOver()
+end
+
+function HighStackerGame:onGameOver()
+	switchBGM(nil)
+	if not self.clear_bonus_given then
+		love.graphics.setColor(1, 1, 1, 1)
+		love.graphics.setFont(font_3x5_3)
+		love.graphics.printf("GAME\nOVER", 64, 200, 160, "center")
+	else
+		if self.game_over_frames >= 300 then
+			local alpha = 0
+			local animation_length = 120
+			if self.game_over_frames - 300 < animation_length then
+				-- Show field for a bit, then fade out.
+				alpha = math.pow(2048, (self.game_over_frames - 300)/animation_length - 1)
+			else
+				alpha = 1
+			end
+			love.graphics.setColor(0, 0, 0, alpha)
+			love.graphics.rectangle(
+				"fill", 64, 80,
+				16 * self.grid.width, 16 * (self.grid.height - 4)
+			)
+		end
+		if self.game_over_frames >= 420 and loop == 2 then
+			love.graphics.setColor(1, 1, 1, 1)
+			love.graphics.setFont(font_3x5_2)
+			love.graphics.printf(
+				[[And so, the journey
+for the true end of
+this absurd scoring
+mode is over...
+
+From now on,
+aim for an even
+	  higher score.
+
+May fortune
+	   be with you.
+
+	   -Xx_Henry_xX]], 67, math.max(125, 1000 - self.game_over_frames), 160, "left")
+		end
+	end
+end
+
+HighStackerGame.rollOpacityFunction = function(age)
+	if age < 240 then return 1
+	elseif age > 300 then return 0
+	else return 1 - (age - 240) / 60 end
+end
+
+HighStackerGame.mRollOpacityFunction = function(age)
+	if age > 4 then return 0
+	else return 1 - age / 4 end
+end
+
+function HighStackerGame:drawGrid()
+	if self.clear and not (self.completed or self.game_over) then
+		if self.loop == 2 then
+			self.grid:drawInvisible(self.mRollOpacityFunction, nil, false)
+		elseif self.loop == 1 then
+			self.grid:drawInvisible(self.rollOpacityFunction, nil, false)
+		else
+			self.grid:draw()
+		end
+	else
+		self.grid:draw()
+		if self.piece ~= nil then
+			self:drawGhostPiece(ruleset)
+		end
+	end
+end
+
+function HighStackerGame:drawScoringInfo()
+	love.graphics.setColor(1, 1, 1, 1)
+	love.graphics.setFont(font_3x5_2)
+
+	--y is dis debug text everywhere
+	--[[
+	love.graphics.setFont(font_3x5_2)
+	love.graphics.print(
+		self.das.direction .. " " ..
+		self.das.frames .. " " ..
+		strTrueValues(self.prev_inputs)
+	)
+	]]
+
+	love.graphics.printf("NEXT", 126, 6, 40, "left")
+	love.graphics.printf("HOLD", 46, 6, 40, "left")
+	--love.graphics.printf("SCORE", 240, 200, 40, "left")
+	local vertpos = 320
+	if self.show_loop then vertpos = 290 end
+	love.graphics.printf("LEVEL", 240, vertpos, 40, "left")
+
+	love.graphics.setFont(font_3x5_3)
+	if self.clear and not self.actually_cue_the_rolls and self.roll_frames >= -120 then
+		if self.loop == 2 then
+			love.graphics.printf("WELCOME TO THE SPECIAL ROUND", 64, 200, 160, "center")
+		else
+			love.graphics.printf("Let's try everything again", 64, 200, 160, "center")
+		end
+	end	
+
+	if self.clear_bonus_given then
+		if self.loop == 0 then
+			love.graphics.setFont(font_3x5_3)
+			love.graphics.printf("ALL CLEAR!", 44, 100, 200, "center")
+			love.graphics.setFont(font_3x5)
+			love.graphics.printf("(probably)", 44, 125, 200, "center")
+
+			love.graphics.setFont(font_3x5_2)
+			love.graphics.printf("TOTAL LINES", 80, 240, 120, "left")
+			love.graphics.printf(self.total_lines .. " x 10\n" .. (self.total_lines * 10), 80, 260, 120, "right")
+			love.graphics.printf("ROLL LINES", 80, 320, 120, "left")
+			love.graphics.printf(self.lines .. " x 100\n" .. (self.lines * 100), 80, 340, 120, "right")
+		elseif self.loop == 1 then
+			love.graphics.setFont(font_3x5_3)
+			love.graphics.printf("ALL CLEAR!", 44, 100, 200, "center")
+			love.graphics.setFont(font_3x5)
+			love.graphics.printf("(probably)", 44, 125, 200, "center")
+
+			love.graphics.setFont(font_3x5_2)
+			love.graphics.printf("TOTAL LINES", 80, 240, 120, "left")
+			love.graphics.printf(self.total_lines .. " x 100\n" .. (self.total_lines * 100), 80, 260, 120, "right")
+			love.graphics.printf("ROLL LINES", 80, 320, 120, "left")
+			love.graphics.printf(self.lines .. " x 500\n" .. (self.lines * 500), 80, 340, 120, "right")
+		elseif self.game_over_frames < 300 then
+			love.graphics.printf("CONGRATULATIONS!\nTRUE 2-ALL\nCLEAR!!!", 44, 100, 200, "center")
+
+			love.graphics.setFont(font_3x5_2)
+			love.graphics.printf("TOTAL LINES", 80, 240, 120, "left")
+			love.graphics.printf(self.total_lines .. " x 100\n" .. (self.total_lines * 100), 80, 260, 120, "right")
+			love.graphics.printf("ROLL LINES", 80, 320, 120, "left")
+			love.graphics.printf(self.lines .. " x 1000\n" .. (self.lines * 1000), 80, 340, 120, "right")
+		end
+	end
+
+	if(self.cool_timer > 0) then
+		love.graphics.printf("COOL!!", 64, 400, 160, "center")
+		self.cool_timer = self.cool_timer - 1
+	end
+
+	love.graphics.setFont(font_8x11)
+	love.graphics.setColor(1, 1, 1, 1)
+	love.graphics.printf(self.score, 48, 420, 180, "right")
+	love.graphics.setFont(font_3x5_3)
+	if self.show_loop then
+		if self.loop == 2 then
+			love.graphics.printf("2'-", 240, 310, 40, "right")
+		elseif self.loop == 1 then
+			love.graphics.printf("2-", 240, 310, 40, "left")
+		end
+	end
+	love.graphics.printf(self:getLevel(), 240, 340, 40, "right")
+	love.graphics.printf(self:getSectionEndLevel(), 240, 370, 40, "right")
+	love.graphics.setFont(font_3x5_2)
+	love.graphics.printf(formatTime(self.frames), 500, 420, 180, "left")
+
+	love.graphics.setColor(1, 1, 1, 1)
+	if self.loop == 0 then
+		local prevSectionTotal = 0
+		for i = 0, #self.section_scores do
+			prevSectionTotal = prevSectionTotal + self.section_scores[i]
+		end
+		love.graphics.printf(self.score - prevSectionTotal, 240, 420, 70, "right")
+		love.graphics.printf("/" .. lowest_section_cool_cutoff + 50000 * (math.floor(self.level / 100) + self.section_cools), 240, 436, 70, "right")
+	end
+
+    cool_counter = 0
+	for i = 0, #self.section_scores do
+		love.graphics.setColor(1, 1, 1, 1)
+		if self.section_scores[i] > lowest_section_cool_cutoff + 50000 * (i + cool_counter) then
+			love.graphics.setColor(0, 1, 0, 1)
+			cool_counter = cool_counter + 1
+		end
+		love.graphics.printf(self.section_scores[i], 400, 80 + 16 * i, 180, "right")
+	end
+
+	love.graphics.setColor(1, 1, 1, 1)
+	if self.detail_timer > 0 then
+		for i = 1, #self.line_details do
+			love.graphics.printf(self.line_details[i] .. "x" .. line_count_multiplier[#self.line_details], 240, 134 + 16 * i, 60, "right")
+		end
+		for i = 1, #self.line_details_second do
+			love.graphics.printf(self.line_details_second[i] .. "x" .. line_count_multiplier[#self.line_details], 240, 196 + 16 * i, 60, "right")
+		end
+	end
+end
+
+function HighStackerGame:getHighscoreData()
+	return {
+		score = self.score,
+		level = self.level,
+		frames = self.frames,
+	}
+end
+
+function HighStackerGame:getLevel()
+	if self.loop ~=0 then return self.level - 500 end
+	return self.level
+end
+
+function HighStackerGame:getSectionEndLevel()
+	if self.loop ~=0 then return math.min(math.floor((self.level - 500) / 100 + 1) * 100, 500) end
+	return math.min(math.floor(self.level / 100 + 1) * 100, 500)
+end
+
+function HighStackerGame:getBackground()
+	return math.floor(self.level / 100)
+end
+
+return HighStackerGame