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diff --git a/games/minimal/mods/testnodes/drawtypes.lua b/games/minimal/mods/testnodes/drawtypes.lua
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+--[[ Drawtype Test: This file tests out and provides examples for
+all drawtypes in Minetest. It is attempted to keep the node
+definitions as simple and minimal as possible to keep
+side-effects to a minimum.
+
+How to read the node definitions:
+There are two parts which are separated by 2 newlines:
+The first part contains the things that are more or less essential
+for defining the drawtype (except description, which is
+at the top for readability).
+The second part (after the 2 newlines) contains stuff that are
+unrelated to the drawtype, stuff that is mostly there to make
+testing this node easier and more convenient.
+]]
+
+local S = minetest.get_translator("testnodes")
+
+-- If set to true, will show an inventory image for nodes that have no inventory image as of Minetest 5.1.0.
+-- This is due to <https://github.com/minetest/minetest/issues/9209>.
+-- This is only added to make the items more visible to avoid confusion, but you will no longer see
+-- the default inventory images for these items. When you want to test the default inventory image of drawtypes,
+-- this should be turned off.
+-- TODO: Remove support for fallback inventory image as soon #9209 is fixed.
+local SHOW_FALLBACK_IMAGE = minetest.settings:get_bool("testnodes_show_fallback_image", false)
+
+local fallback_image = function(img)
+	if SHOW_FALLBACK_IMAGE then
+		return img
+	else
+		return nil
+	end
+end
+
+-- A regular cube
+minetest.register_node("testnodes:normal", {
+	description = S("Normal Drawtype Test Node"),
+	drawtype = "normal",
+	tiles = { "testnodes_normal.png" },
+
+	groups = { dig_immediate = 3 },
+})
+
+-- Standard glasslike node
+minetest.register_node("testnodes:glasslike", {
+	description = S("Glasslike Drawtype Test Node"),
+	drawtype = "glasslike",
+	paramtype = "light",
+	tiles = { "testnodes_glasslike.png" },
+
+	groups = { dig_immediate = 3 },
+})
+
+-- Glasslike framed with the two textures (normal and "detail")
+minetest.register_node("testnodes:glasslike_framed", {
+	description = S("Glasslike Framed Drawtype Test Node"),
+	drawtype = "glasslike_framed",
+	paramtype = "light",
+	tiles = {
+		"testnodes_glasslike_framed.png",
+		"testnodes_glasslike_detail.png",
+	},
+
+
+	sunlight_propagates = true,
+	groups = { dig_immediate = 3 },
+})
+
+-- Like the one above, but without the "detail" texture (texture 2).
+-- This node was added to see how the engine behaves when the "detail" texture
+-- is missing.
+minetest.register_node("testnodes:glasslike_framed_no_detail", {
+	description = S("Glasslike Framed without Detail Drawtype Test Node"),
+	drawtype = "glasslike_framed",
+	paramtype = "light",
+	tiles = { "testnodes_glasslike_framed2.png" },
+
+
+	sunlight_propagates = true,
+	groups = { dig_immediate = 3 },
+})
+
+
+minetest.register_node("testnodes:glasslike_framed_optional", {
+	description = S("Glasslike Framed Optional Drawtype Test Node"),
+	drawtype = "glasslike_framed_optional",
+	paramtype = "light",
+	tiles = {
+		"testnodes_glasslike_framed_optional.png",
+		"testnodes_glasslike_detail.png",
+	},
+
+
+	sunlight_propagates = true,
+	groups = { dig_immediate = 3 },
+})
+
+
+
+minetest.register_node("testnodes:allfaces", {
+	description = S("Allfaces Drawtype Test Node"),
+	drawtype = "allfaces",
+	paramtype = "light",
+	tiles = { "testnodes_allfaces.png" },
+
+	groups = { dig_immediate = 3 },
+})
+
+minetest.register_node("testnodes:allfaces_optional", {
+	description = S("Allfaces Optional Drawtype Test Node"),
+	drawtype = "allfaces_optional",
+	paramtype = "light",
+	tiles = { "testnodes_allfaces_optional.png" },
+
+	groups = { dig_immediate = 3 },
+})
+
+minetest.register_node("testnodes:allfaces_optional_waving", {
+	description = S("Waving Allfaces Optional Drawtype Test Node"),
+	drawtype = "allfaces_optional",
+	paramtype = "light",
+	tiles = { "testnodes_allfaces_optional.png^[brighten" },
+	waving = 2,
+
+	groups = { dig_immediate = 3 },
+})
+
+minetest.register_node("testnodes:firelike", {
+	description = S("Firelike Drawtype Test Node"),
+	drawtype = "firelike",
+	paramtype = "light",
+	tiles = { "testnodes_firelike.png" },
+
+
+	walkable = false,
+	groups = { dig_immediate = 3 },
+})
+
+minetest.register_node("testnodes:fencelike", {
+	description = S("Fencelike Drawtype Test Node"),
+	drawtype = "fencelike",
+	paramtype = "light",
+	tiles = { "testnodes_fencelike.png" },
+
+	groups = { dig_immediate = 3 },
+})
+
+minetest.register_node("testnodes:torchlike", {
+	description = S("Wallmounted Torchlike Drawtype Test Node"),
+	drawtype = "torchlike",
+	paramtype = "light",
+	paramtype2 = "wallmounted",
+	tiles = {
+		"testnodes_torchlike_floor.png",
+		"testnodes_torchlike_ceiling.png",
+		"testnodes_torchlike_wall.png",
+	},
+
+
+	walkable = false,
+	sunlight_propagates = true,
+	groups = { dig_immediate = 3 },
+	inventory_image = fallback_image("testnodes_torchlike_floor.png"),
+})
+
+minetest.register_node("testnodes:signlike", {
+	description = S("Wallmounted Signlike Drawtype Test Node"),
+	drawtype = "signlike",
+	paramtype = "light",
+	paramtype2 = "wallmounted",
+	tiles = { "testnodes_signlike.png" },
+
+
+	walkable = false,
+	groups = { dig_immediate = 3 },
+	sunlight_propagates = true,
+	inventory_image = fallback_image("testnodes_signlike.png"),
+})
+
+minetest.register_node("testnodes:plantlike", {
+	description = S("Plantlike Drawtype Test Node"),
+	drawtype = "plantlike",
+	paramtype = "light",
+	tiles = { "testnodes_plantlike.png" },
+
+
+	walkable = false,
+	sunlight_propagates = true,
+	groups = { dig_immediate = 3 },
+})
+
+minetest.register_node("testnodes:plantlike_waving", {
+	description = S("Waving Plantlike Drawtype Test Node"),
+	drawtype = "plantlike",
+	paramtype = "light",
+	tiles = { "testnodes_plantlike_waving.png" },
+	waving = 1,
+
+
+	walkable = false,
+	sunlight_propagates = true,
+	groups = { dig_immediate = 3 },
+})
+
+
+
+-- param2 will rotate
+minetest.register_node("testnodes:plantlike_degrotate", {
+	description = S("Degrotate Plantlike Drawtype Test Node"),
+	drawtype = "plantlike",
+	paramtype = "light",
+	paramtype2 = "degrotate",
+	tiles = { "testnodes_plantlike_degrotate.png" },
+
+
+	walkable = false,
+	sunlight_propagates = true,
+	groups = { dig_immediate = 3 },
+})
+
+-- param2 will change height
+minetest.register_node("testnodes:plantlike_leveled", {
+	description = S("Leveled Plantlike Drawtype Test Node"),
+	drawtype = "plantlike",
+	paramtype = "light",
+	paramtype2 = "leveled",
+	tiles = {
+		{ name = "testnodes_plantlike_leveled.png", tileable_vertical = true },
+	},
+
+
+	-- We set a default param2 here only for convenience, to make the "plant" visible after placement
+	place_param2 = 8,
+	walkable = false,
+	sunlight_propagates = true,
+	groups = { dig_immediate = 3 },
+})
+
+-- param2 changes shape
+minetest.register_node("testnodes:plantlike_meshoptions", {
+	description = S("Meshoptions Plantlike Drawtype Test Node"),
+	drawtype = "plantlike",
+	paramtype = "light",
+	paramtype2 = "meshoptions",
+	tiles = { "testnodes_plantlike_meshoptions.png" },
+
+
+	walkable = false,
+	groups = { dig_immediate = 3 },
+})
+
+minetest.register_node("testnodes:plantlike_rooted", {
+	description = S("Rooted Plantlike Drawtype Test Node"),
+	drawtype = "plantlike_rooted",
+	paramtype = "light",
+	tiles = { "testnodes_plantlike_rooted_base.png" },
+	special_tiles = { "testnodes_plantlike_rooted.png" },
+
+	groups = { dig_immediate = 3 },
+})
+
+minetest.register_node("testnodes:plantlike_rooted_waving", {
+	description = S("Waving Rooted Plantlike Drawtype Test Node"),
+	drawtype = "plantlike_rooted",
+	paramtype = "light",
+	tiles = {
+		"testnodes_plantlike_rooted_base.png",
+		"testnodes_plantlike_rooted_base.png",
+		"testnodes_plantlike_rooted_base_side_waving.png",
+	},
+	special_tiles = { "testnodes_plantlike_rooted_waving.png" },
+	waving = 1,
+
+	groups = { dig_immediate = 3 },
+})
+
+-- param2 changes height
+minetest.register_node("testnodes:plantlike_rooted_leveled", {
+	description = S("Leveled Rooted Plantlike Drawtype Test Node"),
+	drawtype = "plantlike_rooted",
+	paramtype = "light",
+	paramtype2 = "leveled",
+	tiles = {
+		"testnodes_plantlike_rooted_base.png",
+		"testnodes_plantlike_rooted_base.png",
+		"testnodes_plantlike_rooted_base_side_leveled.png",
+	},
+	special_tiles = {
+		{ name = "testnodes_plantlike_rooted_leveled.png", tileable_vertical = true },
+	},
+
+
+	-- We set a default param2 here only for convenience, to make the "plant" visible after placement
+	place_param2 = 8,
+	groups = { dig_immediate = 3 },
+})
+
+-- param2 changes shape
+minetest.register_node("testnodes:plantlike_rooted_meshoptions", {
+	description = S("Meshoptions Rooted Plantlike Drawtype Test Node"),
+	drawtype = "plantlike_rooted",
+	paramtype = "light",
+	paramtype2 = "meshoptions",
+	tiles = {
+		"testnodes_plantlike_rooted_base.png",
+		"testnodes_plantlike_rooted_base.png",
+		"testnodes_plantlike_rooted_base_side_meshoptions.png",
+	},
+	special_tiles = {
+		"testnodes_plantlike_rooted_meshoptions.png",
+	},
+
+	groups = { dig_immediate = 3 },
+})
+
+-- param2 changes rotation
+minetest.register_node("testnodes:plantlike_rooted_degrotate", {
+	description = S("Degrotate Rooted Plantlike Drawtype Test Node"),
+	drawtype = "plantlike_rooted",
+	paramtype = "light",
+	paramtype2 = "degrotate",
+	tiles = {
+		"testnodes_plantlike_rooted_base.png",
+		"testnodes_plantlike_rooted_base.png",
+		"testnodes_plantlike_rooted_base_side_degrotate.png",
+	},
+	special_tiles = {
+		"testnodes_plantlike_rooted_degrotate.png",
+	},
+
+	groups = { dig_immediate = 3 },
+})
+
+-- Demonstrative liquid nodes, source and flowing form. This is only the
+-- drawtype, no physical liquid properties are used
+minetest.register_node("testnodes:liquid", {
+	description = S("Source Liquid Drawtype Test Node"),
+	drawtype = "liquid",
+	paramtype = "light",
+	tiles = {
+		"testnodes_liquidsource.png",
+	},
+	special_tiles = {
+		{name="testnodes_liquidsource.png", backface_culling=false},
+		{name="testnodes_liquidsource.png", backface_culling=true},
+	},
+	use_texture_alpha = true,
+
+
+	walkable = false,
+	liquid_alternative_flowing = "testnodes:liquid_flowing",
+	liquid_alternative_source = "testnodes:liquid",
+	groups = { dig_immediate = 3 },
+})
+minetest.register_node("testnodes:liquid_flowing", {
+	description = S("Flowing Liquid Drawtype Test Node"),
+	drawtype = "flowingliquid",
+	paramtype = "light",
+	paramtype2 = "flowingliquid",
+	tiles = {
+		"testnodes_liquidflowing.png",
+	},
+	special_tiles = {
+		{name="testnodes_liquidflowing.png", backface_culling=false},
+		{name="testnodes_liquidflowing.png", backface_culling=false},
+	},
+	use_texture_alpha = true,
+
+
+	walkable = false,
+	liquid_alternative_flowing = "testnodes:liquid_flowing",
+	liquid_alternative_source = "testnodes:liquid",
+	groups = { dig_immediate = 3 },
+})
+minetest.register_node("testnodes:liquid_waving", {
+	description = S("Waving Source Liquid Drawtype Test Node"),
+	drawtype = "liquid",
+	paramtype = "light",
+	tiles = {
+		"testnodes_liquidsource.png^[brighten",
+	},
+	special_tiles = {
+		{name="testnodes_liquidsource.png^[brighten", backface_culling=false},
+		{name="testnodes_liquidsource.png^[brighten", backface_culling=true},
+	},
+	use_texture_alpha = true,
+	waving = 3,
+
+
+	walkable = false,
+	liquid_alternative_flowing = "testnodes:liquid_flowing",
+	liquid_alternative_source = "testnodes:liquid",
+	groups = { dig_immediate = 3 },
+})
+minetest.register_node("testnodes:liquid_flowing_waving", {
+	description = S("Waving Flowing Liquid Drawtype Test Node"),
+	drawtype = "flowingliquid",
+	paramtype = "light",
+	paramtype2 = "flowingliquid",
+	tiles = {
+		"testnodes_liquidflowing.png^[brighten",
+	},
+	special_tiles = {
+		{name="testnodes_liquidflowing.png^[brighten", backface_culling=false},
+		{name="testnodes_liquidflowing.png^[brighten", backface_culling=false},
+	},
+	use_texture_alpha = true,
+	waving = 3,
+
+
+	walkable = false,
+	liquid_alternative_flowing = "testnodes:liquid_flowing",
+	liquid_alternative_source = "testnodes:liquid",
+	groups = { dig_immediate = 3 },
+})
+
+
+
+-- Invisible node
+minetest.register_node("testnodes:airlike", {
+	description = S("Airlike Drawtype Test Node"),
+	drawtype = "airlike",
+	paramtype = "light",
+
+
+	walkable = false,
+	groups = { dig_immediate = 3 },
+	sunlight_propagates = true,
+	inventory_image = fallback_image("testnodes_airlike.png"),
+})
+
+-- param2 changes liquid height
+minetest.register_node("testnodes:glassliquid", {
+	description = S("Glasslike Liquid Level Drawtype Test Node"),
+	drawtype = "glasslike_framed",
+	paramtype = "light",
+	paramtype2 = "glasslikeliquidlevel",
+	tiles = {
+		"testnodes_glasslikeliquid.png",
+	},
+	special_tiles = {
+		"testnodes_liquid.png",
+	},
+
+	groups = { dig_immediate = 3 },
+})
+
+-- Adding many raillike examples, primarily to demonstrate the behavior of
+-- "raillike groups". Nodes of the same type (rail, groupless, line, street)
+-- should connect to nodes of the same "rail type" (=same shape, different
+-- color) only.
+local rails = {
+	{ "rail", {"testnodes_rail_straight.png", "testnodes_rail_curved.png", "testnodes_rail_t_junction.png", "testnodes_rail_crossing.png"} },
+	{ "line", {"testnodes_line_straight.png", "testnodes_line_curved.png", "testnodes_line_t_junction.png", "testnodes_line_crossing.png"}, },
+	{ "street", {"testnodes_street_straight.png", "testnodes_street_curved.png", "testnodes_street_t_junction.png", "testnodes_street_crossing.png"}, },
+	-- the "groupless" nodes are nodes in which the "connect_to_raillike" group is not set
+	{ "groupless", {"testnodes_rail2_straight.png", "testnodes_rail2_curved.png", "testnodes_rail2_t_junction.png", "testnodes_rail2_crossing.png"} },
+}
+local colors = { "", "cyan", "red" }
+
+for r=1, #rails do
+	local id = rails[r][1]
+	local tiles = rails[r][2]
+	local raillike_group
+	if id ~= "groupless" then
+		raillike_group = minetest.raillike_group(id)
+	end
+	for c=1, #colors do
+		local color
+		if colors[c] ~= "" then
+			color = colors[c]
+		end
+		minetest.register_node("testnodes:raillike_"..id..c, {
+			description = S("Raillike Drawtype Test Node: @1 @2", id, c),
+			drawtype = "raillike",
+			paramtype = "light",
+			tiles = tiles,
+			groups = { connect_to_raillike = raillike_group, dig_immediate = 3 },
+
+
+			color = color,
+			selection_box = {
+				type = "fixed",
+				fixed = {{-0.5,  -0.5,  -0.5, 0.5, -0.4, 0.5}},
+			},
+			sunlight_propagates = true,
+			walkable = false,
+		})
+	end
+end
+
+
+
+-- Add visual_scale variants of previous nodes for half and double size
+local scale = function(subname, desc_double, desc_half)
+	local original = "testnodes:"..subname
+	local def = table.copy(minetest.registered_items[original])
+	def.visual_scale = 2.0
+	def.description = desc_double
+	minetest.register_node("testnodes:"..subname.."_double", def)
+	def = table.copy(minetest.registered_items[original])
+	def.visual_scale = 0.5
+	def.description = desc_half
+	minetest.register_node("testnodes:"..subname.."_half", def)
+end
+
+scale("plantlike",
+	S("Double-sized Plantlike Drawtype Test Node"),
+	S("Half-sized Plantlike Drawtype Test Node"))
+scale("torchlike",
+	S("Double-sized Wallmounted Torchlike Drawtype Test Node"),
+	S("Half-sized Wallmounted Torchlike Drawtype Test Node"))
+scale("signlike",
+	S("Double-sized Wallmounted Signlike Drawtype Test Node"),
+	S("Half-sized Wallmounted Signlike Drawtype Test Node"))
+scale("firelike",
+	S("Double-sized Firelike Drawtype Test Node"),
+	S("Half-sized Firelike Drawtype Test Node"))