diff --git a/examples.lua b/examples.lua
index 8f0ff67..69950fe 100644
--- a/examples.lua
+++ b/examples.lua
@@ -12,6 +12,21 @@ playereffects.register_effect_type("high_speed", "High speed", nil, {"speed"},
 	end
 )
 
+-- Makes the user faster (hidden effect)
+playereffects.register_effect_type("high_speed_hidden", "High speed", nil, {"speed"}, 
+	function(player)
+		player:set_physics_override(4,nil,nil)
+	end,
+	
+	function(effect)
+		local player = minetest.get_player_by_name(effect.playername)
+		player:set_physics_override(1,nil,nil)
+	end,
+	true
+)
+
+
+
 -- Slows the user down
 playereffects.register_effect_type("low_speed", "Low speed", nil, {"speed"}, 
 	function(player)
@@ -69,6 +84,14 @@ minetest.register_chatcommand("fast", {
 		playereffects.apply_effect_type("high_speed", 10, minetest.get_player_by_name(name))
 	end,
 })
+minetest.register_chatcommand("hfast", {
+	params = "",
+	description = "Makes you fast for a short time (hidden effect).",
+	privs = {},
+	func = function(name, param)
+		playereffects.apply_effect_type("high_speed_hidden", 10, minetest.get_player_by_name(name))
+	end,
+})
 minetest.register_chatcommand("slow", {
 	params = "",
 	description = "Makes you slow for a long time.",
diff --git a/init.lua b/init.lua
index cad14d6..992b62d 100644
--- a/init.lua
+++ b/init.lua
@@ -48,7 +48,7 @@ function playereffects.next_effect_id()
 end
 
 --[=[ API functions ]=]
-function playereffects.register_effect_type(name, description, icon, groups, apply, cancel)
+function playereffects.register_effect_type(name, description, icon, groups, apply, cancel, hidden)
 	effect_type = {}
 	effect_type.description = description
 	effect_type.apply = apply
@@ -59,6 +59,11 @@ function playereffects.register_effect_type(name, description, icon, groups, app
 	else
 		effect_type.cancel = function() end
 	end
+	if hidden ~= nil then
+		effect_type.hidden = hidden
+	else
+		effect_type.hidden = false
+	end
 	playereffects.effect_types[name] = effect_type
 	minetest.log("action", "Effect type "..name.." registered!")
 end
@@ -306,7 +311,8 @@ end
 
 function playereffects.hud_effect(effect_type_id, player, pos, time_left)
 	local text_id, icon_id
-	if(playereffects.use_hud == true) then
+	local effect_type = playereffects.effect_types[effect_type_id]
+	if(playereffects.use_hud == true and effect_type.hidden == false) then
 		text_id = player:hud_add({
 			hud_elem_type = "text",
 			position = { x = 1, y = 0.3 },