diff --git a/README.md b/README.md
index fa1e792..6360670 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,7 @@ Minetest can be found online at <https://github.com/minetest/minetest/>.
 
 ## Important notices and short game guide
 
+* Press Aux1 key to change your jump strength
 * Be sure the `minetest.conf` file in the main Minetest directory doesn't have any parameters who are in conflict with the `minetest.conf` file from the `hades_revisited` directory. Especially mapgen parameters or stuff like `give_initial_stuff = false`
 * There only 1 biome, with the focus on terraforming and landscaping
 * Not everyone will like this game. But maybe there are some freaks out there ;-)
diff --git a/mods/hades_movement/init.lua b/mods/hades_movement/init.lua
new file mode 100644
index 0000000..c98ffd5
--- /dev/null
+++ b/mods/hades_movement/init.lua
@@ -0,0 +1,84 @@
+local HIDE_JUMP_HUD_AFTER = 5 -- seconds after which to hide jump HUD
+local JUMP_FACTOR_HIGH = 1
+local JUMP_FACTOR_MED = 0.85
+local JUMP_FACTOR_LOW = 0.65
+
+local ctrls = {} -- cache player controls
+local jump_modes = {} -- current jump modes of each player
+	-- mode 0: high jump
+	-- mode 1: med jump
+	-- mode 2: low jump
+local jump_huds = {} -- current HUD IDs of each player
+local remove_time = {} -- countdown timer to hide the jump HUD icon again
+
+minetest.register_globalstep(function(dtime)
+	for _, player in pairs(minetest.get_connected_players()) do
+		local name = player:get_player_name()
+		local ctrl = player:get_player_control()
+		if not ctrls[name] then
+			ctrls[name] = {}
+		end
+		if not jump_modes[name] then
+			jump_modes[name] = 0
+		end
+		-- Aux1 key: Cycle jump mode (high, medium, low jump strength)
+		if ctrl.aux1 == true then
+			if not ctrls[name].aux1 then
+				local mode = jump_modes[name]
+				mode = (mode - 1) % 3
+				jump_modes[name] = mode
+				local jump_height = JUMP_FACTOR_HIGH
+				local img = "hades_movement_jump_high.png"
+				if (mode == 1) then
+					jump_height = JUMP_FACTOR_MED
+					img = "hades_movement_jump_med.png"
+				elseif (mode == 2) then
+					jump_height = JUMP_FACTOR_LOW
+					img = "hades_movement_jump_low.png"
+				end
+				playerphysics.add_physics_factor(player, "jump", "jump_mode", jump_height)
+				if jump_huds[name] then
+					player:hud_change(jump_huds[name], "text", img)
+				end
+				minetest.sound_play({name="hades_movement_change_jump_mode", gain=0.4}, {pitch=1-mode*0.1}, true)
+				remove_time[name] = HIDE_JUMP_HUD_AFTER
+			end
+			ctrls[name].aux1 = true
+		else
+			if remove_time[name] and remove_time[name] > 0 then
+				remove_time[name] = remove_time[name] - dtime
+				if remove_time[name] <= 0 then
+					player:hud_change(jump_huds[name], "text", "blank.png")
+					remove_time[name] = nil
+				end
+			end
+			ctrls[name].aux1 = false
+		end
+	end
+end)
+
+minetest.register_on_joinplayer(function(player)
+	local name = player:get_player_name()
+	ctrls[name] = {}
+	jump_modes[name] = 0
+	-- Show icon that displays the current jump mode
+	jump_huds[name] = player:hud_add({
+		hud_elem_type = "image",
+		position = { x=1, y=1 },
+		alignment = { x=-1, y=-1 },
+		size = { x=100, y=100 },
+		scale = { x=3, y=3},
+		offset = { x=-4, y=-4},
+		text = "blank.png",
+		z_index = 0,
+	})
+	remove_time[name] = HIDE_JUMP_HUD_AFTER
+end)
+
+minetest.register_on_leaveplayer(function(player)
+	local name = player:get_player_name()
+	ctrls[name] = nil
+	jump_modes[name] = nil
+	jump_huds[name] = nil
+	remove_time[name] = nil
+end)
diff --git a/mods/hades_movement/mod.conf b/mods/hades_movement/mod.conf
new file mode 100644
index 0000000..d834929
--- /dev/null
+++ b/mods/hades_movement/mod.conf
@@ -0,0 +1,3 @@
+name = hades_movement
+description = Press Aux1 to change jump strength.
+depends = playerphysics
diff --git a/mods/hades_movement/sounds/hades_movement_change_jump_mode.ogg b/mods/hades_movement/sounds/hades_movement_change_jump_mode.ogg
new file mode 100644
index 0000000..be9de90
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diff --git a/mods/hades_movement/sounds/snd.wav b/mods/hades_movement/sounds/snd.wav
new file mode 100644
index 0000000..f255502
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diff --git a/mods/hades_movement/textures/hades_movement_jump_high.png b/mods/hades_movement/textures/hades_movement_jump_high.png
new file mode 100644
index 0000000..a0d27e7
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diff --git a/mods/hades_movement/textures/hades_movement_jump_low.png b/mods/hades_movement/textures/hades_movement_jump_low.png
new file mode 100644
index 0000000..7649a3a
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diff --git a/mods/hades_movement/textures/hades_movement_jump_med.png b/mods/hades_movement/textures/hades_movement_jump_med.png
new file mode 100644
index 0000000..22a796f
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