diff --git a/src/global/rng_utils.gd b/src/global/rng_utils.gd
index 8e33ab3..5f758cd 100644
--- a/src/global/rng_utils.gd
+++ b/src/global/rng_utils.gd
@@ -1,11 +1,28 @@
 ## Random number generator static utility class.
 class_name RngUtils
 
+static var global_rng
+
+
+static func get_global_rng() -> RandomNumberGenerator:
+	if global_rng == null:
+		set_global_rng()
+	return global_rng
+
+
+static func set_global_rng() -> void:
+	global_rng = RandomNumberGenerator.new()
+	global_rng.randomize()
+
 
 ## Returns bool [code]true[/code] if [param c] is greater than a random value
 ## between 0.0 and 1.0, bool [code]false[/code] otherwise.
 static func chancef(c: float) -> bool:
-	return c > randf()
+	return chancef_rng(c, get_global_rng())
+
+
+static func chancef_rng(c: float, rng: RandomNumberGenerator) -> bool:
+	return c > rng.randf()
 
 
 ## Returns [code]true[/code] if [param c] divided by 100 is greater than a
@@ -16,15 +33,23 @@ static func chancef(c: float) -> bool:
 ##     print("25% chance to hit")
 ## [/codeblock]
 static func chance100(c: float) -> bool:
-	return chancef(c / 100.0)
+	return chance100_rng(c, get_global_rng())
+
+
+static func chance100_rng(c: float, rng: RandomNumberGenerator) -> bool:
+	return chancef_rng(c / 100.0, rng)
 
 
 ## Returns [code]true[/code] if [param c] divided by 100 is greater than a
 ## random value between 0.0 and 1.0 at least once within [param n] number of
 ## tries, [code]false[/code] otherwise.
 static func chance100_or(c: float, n: int) -> bool:
+	return chance100_or_rng(c, n, get_global_rng())
+
+
+static func chance100_or_rng(c: float, n: int, rng: RandomNumberGenerator) -> bool:
 	for i in n:
-		if chance100(c):
+		if chance100_rng(c, rng):
 			return true
 	return false
 
@@ -32,53 +57,27 @@ static func chance100_or(c: float, n: int) -> bool:
 ## Returns the number of consecutive times [param c] divided by 100 is
 ## greater than a new random value between 0.0 and 1.0 each time. The value of
 ## [param c] must be less than 100.
-static func chance100_seq(c: float) -> int:
+static func chance100_seq(c: float) -> bool:
+	return chance100_seq_rng(c, get_global_rng())
+
+
+static func chance100_seq_rng(c: float, rng: RandomNumberGenerator) -> int:
 	assert(c < 100)
 	var ctr: int = 0
-	while chance100(c):
+	while chance100_rng(c, rng):
 		ctr += 1
 	return ctr
 
 
-## Returns [code]true[/code] if [param c] is greater than a random value
-## between 0.0 and 1.0 using the [RandomNumberGenerator] [param rng],
-## [code]false[/code] otherwise.
-static func chancef_rng(c: float, rng: RandomNumberGenerator) -> bool:
-	return c > rng.randf()
-
-
-## Returns [code]true[/code] if [param c] divided by 100 is greater than a
-## random value between 0.0 and 1.0, [code]false[/code] otherwise.[br]
-## For example:[br]
-## [codeblock]
-## if chance100_rng(25, rng):
-##     print("25% chance to hit")
-## [/codeblock]
-static func chance100_rng(c: float, rng: RandomNumberGenerator) -> bool:
-	return chancef_rng(c / 100.0, rng)
-
-
 ## Returns the number of consecutive times [param c] is greater than a new random
 ## value between 0.0 and 100.0 when reducing [param c] by that random value
 ## upon each iteration. Also known as [i]meaningful chances > 100%[/i].
-static func multi_chance100(c: float) -> int:
-	var ctr := 0
-	var total_chance: float = c
-	while true:
-		var r: float = randf() * 100
-		if r < total_chance:
-			ctr += 1
-			total_chance -= r
-		else:
-			break
 
-	return ctr
+
+static func multi_chance100(c: float) -> int:
+	return multi_chance100_rng(c, get_global_rng())
 
 
-## Returns the number of consecutive times [param c] is greater than a new random
-## value between 0.0 and 100.0 when reducing [param c] by that random value
-## upon each iteration, using the [RandomNumberGenerator] [param rng]. Also known
-## as [i]meaningful chances > 100%[/i].
 static func multi_chance100_rng(c: float, rng: RandomNumberGenerator) -> int:
 	var ctr := 0
 	var total_chance: float = c
diff --git a/src/tests/unit/test_debug_popup.gd b/src/tests/unit/test_debug_popup.gd
new file mode 100644
index 0000000..8eb0cd6
--- /dev/null
+++ b/src/tests/unit/test_debug_popup.gd
@@ -0,0 +1,39 @@
+extends "res://addons/gut/test.gd"
+
+var called_times: int
+
+
+func _fake_button_func():
+	called_times += 1
+
+
+func test_debug_popup() -> void:
+	var debug_popup = load("res://component/debug/debug_popup.tscn").instantiate()
+	debug_popup.default_debug_buttons = DebugButtonCollection.new()
+	var fake_debug_button = DebugButton.new()
+	fake_debug_button.func_or_path = "_fake_button_func"
+	fake_debug_button.hotkey = "7"
+	debug_popup.default_debug_buttons.collection.append(fake_debug_button)
+	var sender = InputSender.new(debug_popup)
+	add_child_autofree(debug_popup)
+
+	sender.action_down("toggle_debug_popup")
+
+	await wait_seconds(0.1)
+	assert_eq(debug_popup.visible, true, "Visible on start busted")
+
+	sender.key_down("7")
+	await wait_seconds(0.1)
+	assert_eq(called_times, 1, "Shortcut not registered")
+
+	var tree: Tree = debug_popup.get_child(0)
+	var navigation_column: TreeItem = tree.get_root().get_next_in_tree()
+	assert_eq(navigation_column.get_text(0), "Navigation and functions")
+	var fake_debug_button_node: TreeItem = navigation_column.get_next_in_tree()
+	assert_eq(fake_debug_button_node.get_text(0), "[7] _fake_button_func()")
+	tree.set_selected(fake_debug_button_node, 0)
+
+	await wait_seconds(0.1)
+	assert_eq(called_times, 2, "Button not found")
+
+	debug_popup.queue_free()
diff --git a/src/tests/unit/test_debug_popup.gd.uid b/src/tests/unit/test_debug_popup.gd.uid
new file mode 100644
index 0000000..de0acd0
--- /dev/null
+++ b/src/tests/unit/test_debug_popup.gd.uid
@@ -0,0 +1 @@
+uid://c1cahfdh8ub41
diff --git a/src/tests/unit/test_rng_utils.gd b/src/tests/unit/test_rng_utils.gd
new file mode 100644
index 0000000..31544c9
--- /dev/null
+++ b/src/tests/unit/test_rng_utils.gd
@@ -0,0 +1,38 @@
+extends "res://addons/gut/test.gd"
+
+var test_rng: RandomNumberGenerator
+
+
+func before_each() -> void:
+	RngUtils.global_rng = RandomNumberGenerator.new()
+	RngUtils.global_rng.seed = 1234
+	test_rng = RandomNumberGenerator.new()
+	test_rng.seed = 1234
+
+
+func test_chancef() -> void:
+	assert_eq(RngUtils.chancef(0.1), false)
+
+
+func test_chance100() -> void:
+	assert_eq(RngUtils.chance100(60), true)
+
+
+func test_chancef_rng() -> void:
+	assert_eq(RngUtils.chancef_rng(0.1, test_rng), false)
+
+
+func test_chance100_rng() -> void:
+	assert_eq(RngUtils.chance100_rng(60, test_rng), true)
+
+
+func test_chance100_or_rng() -> void:
+	assert_eq(RngUtils.chance100_or_rng(10, 5, test_rng), true)
+
+
+func test_chance100_seq_rng() -> void:
+	assert_eq(RngUtils.chance100_seq_rng(80, test_rng), 5)
+
+
+func test_multi_chance100_rng() -> void:
+	assert_eq(RngUtils.multi_chance100_rng(80, test_rng), 3)
diff --git a/src/tests/unit/test_rng_utils.gd.uid b/src/tests/unit/test_rng_utils.gd.uid
new file mode 100644
index 0000000..7024bb0
--- /dev/null
+++ b/src/tests/unit/test_rng_utils.gd.uid
@@ -0,0 +1 @@
+uid://d18o6a8nneg3a