diff --git a/generator/currency_generator.gd b/generator/currency_generator.gd
index b3685e5..bc4a111 100644
--- a/generator/currency_generator.gd
+++ b/generator/currency_generator.gd
@@ -1,24 +1,53 @@
 class_name CurrencyGenerator
 extends Node
 
+## Handles generator economy behavior:
+## - automatic production cycles
+## - manual/hover click rewards with cooldown
+## - purchasing and max-buy
+## - generator state access through the GameState autoload
+
+## Emitted after a successful purchase.
 signal purchase_completed(amount: int, total_owned: int, total_purchased: int, total_cost: BigNumber)
+## Emitted when a purchase is attempted but cannot be paid.
 signal purchase_failed(requested_amount: int, required_cost: BigNumber, available_currency: BigNumber)
+## Emitted when one or more automatic production cycles complete.
 signal production_tick(amount: BigNumber, cycle_count: int, total_owned: int)
 
+## Sentinel exponent used when cost math overflows float range.
 const HUGE_COST_EXPONENT: int = 1000000
 
+## Currency target updated by this generator.
 @export var currency: GameState.CurrencyType = GameState.CurrencyType.gold
+## Data resource containing balancing values and defaults.
 @export var data: CurrencyGeneratorData
+## Enables per-cycle automatic production when true.
 @export var is_automatic: bool = true
+## If true, `_on_pressed` buys one generator instead of granting click currency.
 @export var press_buys_generator: bool = true
+## Extra multiplier applied to automatic production output.
 @export var run_multiplier: float = 1.0
+## Fallback unlocked state when `data` is not assigned.
 @export var starts_unlocked: bool = true
+## Fallback availability state when `data` is not assigned.
 @export var starts_available: bool = true
 
-## Manual click fallback when no data is assigned.
+## Manual click reward fallback when no data is assigned.
 @export var click_mantissa: float = 1.0
+## Exponent for fallback click reward when no data is assigned.
 @export var click_exponent: int = 0
+## Cooldown between click/hover grants when no data is assigned.
+@export var click_cooldown_seconds: float = 0.2
+## If true, hovering grants click reward every cooldown without pressing.
+@export var grants_click_while_hovering: bool = false
 
+## True while the pointer is inside the generator Area2D.
+var _mouse_entered: bool = false
+## Time left until next click/hover grant is allowed.
+var _remaining_click_cooldown_seconds: float = 0.0
+
+## Number of currently owned generators.
+## Backed by GameState via this generator's resolved id.
 var owned: int:
 	get:
 		_ensure_registered()
@@ -27,6 +56,7 @@ var owned: int:
 		_ensure_registered()
 		GameState.set_generator_owned(_generator_id, value)
 
+## Lifetime purchased generators (does not decrease if ownership drops).
 var purchased_count: int:
 	get:
 		_ensure_registered()
@@ -35,6 +65,7 @@ var purchased_count: int:
 		_ensure_registered()
 		GameState.set_generator_purchased_count(_generator_id, value)
 
+## Whether this generator is unlocked for the player.
 var is_unlocked: bool:
 	get:
 		_ensure_registered()
@@ -43,6 +74,7 @@ var is_unlocked: bool:
 		_ensure_registered()
 		GameState.set_generator_unlocked(_generator_id, value)
 
+## Whether this unlocked generator is currently visible/usable to the player.
 var is_available: bool:
 	get:
 		_ensure_registered()
@@ -51,16 +83,25 @@ var is_available: bool:
 		_ensure_registered()
 		GameState.set_generator_available(_generator_id, value)
 
+## Accumulated elapsed time toward the next automatic production cycle.
 var cycle_progress_seconds: float = 0.0
+## Stable id used to store/read generator state in GameState.
 var _generator_id: StringName = &""
+## Prevents duplicate state registration in GameState.
 var _is_registered: bool = false
 
+
+## Resolves and registers this generator state before gameplay updates.
 func _ready() -> void:
 	_generator_id = _resolve_generator_id()
 	_ensure_registered()
 	cycle_progress_seconds = 0.0
 
+## Updates click cooldown/click grants and runs automatic production cycles.
 func _process(delta: float) -> void:
+	_remaining_click_cooldown_seconds = maxf(_remaining_click_cooldown_seconds - maxf(delta, 0.0), 0.0)
+	_try_handle_mouse_click()
+
 	if not is_automatic:
 		return
 	if not is_available_to_player():
@@ -77,6 +118,7 @@ func _process(delta: float) -> void:
 	cycle_progress_seconds -= cycle_seconds * float(completed_cycles)
 	_grant_cycle_income(completed_cycles)
 
+## Adds automatic production from completed cycles and emits `production_tick`.
 func _grant_cycle_income(cycle_count: int) -> void:
 	if data == null or cycle_count <= 0:
 		return
@@ -89,9 +131,11 @@ func _grant_cycle_income(cycle_count: int) -> void:
 	_add_currency(produced)
 	production_tick.emit(produced, cycle_count, owned)
 
+## Convenience helper for the next single-unit purchase cost.
 func get_next_cost() -> BigNumber:
 	return get_cost_for_amount(1)
 
+## Returns cumulative cost to buy `amount` units from current ownership.
 func get_cost_for_amount(amount: int = 1) -> BigNumber:
 	if data == null:
 		return BigNumber.from_float(0.0)
@@ -100,6 +144,7 @@ func get_cost_for_amount(amount: int = 1) -> BigNumber:
 	var raw_cost: float = data.cost_for_amount(owned, safe_amount)
 	return _float_to_big_number(raw_cost)
 
+## Checks whether enough target currency is available for `amount` units.
 func can_buy(amount: int = 1) -> bool:
 	if not is_available_to_player():
 		return false
@@ -108,6 +153,7 @@ func can_buy(amount: int = 1) -> bool:
 	var current: BigNumber = _get_currency_amount()
 	return current.is_greater_than(cost) or current.is_equal_to(cost)
 
+## Attempts to buy `amount` units and emits purchase success/failure signals.
 func buy(amount: int = 1) -> bool:
 	if data == null:
 		return false
@@ -125,6 +171,7 @@ func buy(amount: int = 1) -> bool:
 	purchase_completed.emit(safe_amount, owned, purchased_count, total_cost)
 	return true
 
+## Computes and buys the maximum affordable units with current currency.
 func buy_max() -> int:
 	if data == null:
 		return 0
@@ -152,6 +199,7 @@ func buy_max() -> int:
 		return 0
 	return best if buy(best) else 0
 
+## Handles external "pressed" interaction: buy if configured, otherwise click-grant.
 func _on_pressed() -> void:
 	if not is_available_to_player():
 		return
@@ -160,18 +208,59 @@ func _on_pressed() -> void:
 		buy(1)
 		return
 
-	_add_currency(BigNumber.new(click_mantissa, click_exponent))
+	_try_grant_click_currency()
 
+## Adds currency directly through the configured currency target.
 func grant_currency(amount: BigNumber) -> void:
 	_add_currency(amount)
 
+## Processes pointer interaction while hovering (hold click or hover-only mode).
+func _try_handle_mouse_click() -> void:
+	if not _mouse_entered:
+		return
+	if not is_available_to_player():
+		return
+	if not (_grants_click_while_hovering() or Input.is_action_pressed("click")):
+		return
+
+	_try_grant_click_currency()
+
+## Grants one click/hover reward if cooldown has elapsed.
+func _try_grant_click_currency() -> void:
+	if _remaining_click_cooldown_seconds > 0.0:
+		return
+
+	_add_currency(_get_click_value())
+	_remaining_click_cooldown_seconds = _get_click_cooldown_seconds()
+
+## Resolves click reward from data, with exported fallback when data is missing.
+func _get_click_value() -> BigNumber:
+	if data != null:
+		return BigNumber.new(data.click_mantissa, data.click_exponent)
+	return BigNumber.new(click_mantissa, click_exponent)
+
+## Resolves click cooldown from data, with exported fallback when data is missing.
+func _get_click_cooldown_seconds() -> float:
+	if data != null:
+		return maxf(data.click_cooldown_seconds, 0.0)
+	return maxf(click_cooldown_seconds, 0.0)
+
+## Resolves hover-only click-grant mode from data, with exported fallback.
+func _grants_click_while_hovering() -> bool:
+	if data != null:
+		return data.grants_click_while_hovering
+	return grants_click_while_hovering
+
+## Returns this generator's resolved state id.
 func get_generator_id() -> StringName:
 	_ensure_registered()
 	return _generator_id
 
+## True when the generator is both unlocked and available.
 func is_available_to_player() -> bool:
 	return is_unlocked and is_available
 
+## Routes positive/negative currency deltas to the configured currency bucket.
 func _add_currency(amount: BigNumber) -> void:
 	match currency:
 		GameState.CurrencyType.gold:
@@ -181,6 +270,7 @@ func _add_currency(amount: BigNumber) -> void:
 		_:
 			push_error("Unknown currency type in CurrencyGenerator._add_currency")
 
+## Attempts to spend target currency; returns false when insufficient.
 func _spend_currency(cost: BigNumber) -> bool:
 	match currency:
 		GameState.CurrencyType.gold:
@@ -191,6 +281,7 @@ func _spend_currency(cost: BigNumber) -> bool:
 			push_error("Unknown currency type in CurrencyGenerator._spend_currency")
 			return false
 
+## Returns the current amount for the configured currency type.
 func _get_currency_amount() -> BigNumber:
 	match currency:
 		GameState.CurrencyType.gold:
@@ -200,6 +291,7 @@ func _get_currency_amount() -> BigNumber:
 		_:
 			return BigNumber.from_float(0.0)
 
+## Safely converts finite float values into BigNumber costs.
 func _float_to_big_number(value: float) -> BigNumber:
 	if value <= 0.0:
 		return BigNumber.from_float(0.0)
@@ -207,6 +299,7 @@ func _float_to_big_number(value: float) -> BigNumber:
 		return BigNumber.new(1.0, HUGE_COST_EXPONENT)
 	return BigNumber.from_float(value)
 
+## Converts BigNumber to float for approximate estimate math.
 func _big_number_to_float(value: BigNumber) -> float:
 	if value.mantissa <= 0.0:
 		return 0.0
@@ -216,6 +309,7 @@ func _big_number_to_float(value: BigNumber) -> float:
 		return 0.0
 	return value.mantissa * pow(10.0, float(value.exponent))
 
+## Builds a stable state id from data id, node name, or fallback string.
 func _resolve_generator_id() -> StringName:
 	if data != null:
 		var data_id: String = String(data.id)
@@ -227,6 +321,7 @@ func _resolve_generator_id() -> StringName:
 
 	return &"generator"
 
+## Ensures this generator has a state entry in GameState.
 func _ensure_registered() -> void:
 	if _is_registered:
 		return
@@ -239,12 +334,22 @@ func _ensure_registered() -> void:
 	GameState.register_generator(_generator_id, _default_unlocked_state(), _default_available_state())
 	_is_registered = true
 
+## Default unlocked state used at registration time.
 func _default_unlocked_state() -> bool:
 	if data != null:
 		return data.starts_unlocked
 	return starts_unlocked
 
+## Default available state used at registration time.
 func _default_available_state() -> bool:
 	if data != null:
 		return data.starts_available
 	return starts_available
+
+## Area2D callback: pointer entered generator interaction region.
+func _on_area_2d_mouse_entered() -> void:
+	_mouse_entered = true
+
+## Area2D callback: pointer exited generator interaction region.
+func _on_area_2d_mouse_exited() -> void:
+	_mouse_entered = false
diff --git a/generator/currency_generator_data.gd b/generator/currency_generator_data.gd
index f60fdc3..a4cb425 100644
--- a/generator/currency_generator_data.gd
+++ b/generator/currency_generator_data.gd
@@ -23,6 +23,12 @@ extends Resource
 ## Example: 0.05 means each purchased unit adds +0.05% to output.
 @export var purchased_boost_percent: float = 0.0
 
+## Manual click reward for this generator.
+@export var click_mantissa: float = 1.0
+@export var click_exponent: int = 0
+@export var click_cooldown_seconds: float = 0.2
+@export var grants_click_while_hovering: bool = false
+
 ## Returns cost of next generator
 func cost_next(owned: int) -> float:
 		return cost_for_amount(owned, 1)
diff --git a/generator/primary_generator.tres b/generator/primary_generator.tres
index e96e49b..95a8eeb 100644
--- a/generator/primary_generator.tres
+++ b/generator/primary_generator.tres
@@ -8,4 +8,5 @@ id = &"Gold"
 name = "Gold Mine"
 initial_time = 0.6
 initial_productivity = 1.67
+grants_click_while_hovering = true
 metadata/_custom_type_script = "uid://b00tqsuhxdy0d"
diff --git a/generator_museum.tscn b/generator_museum.tscn
index 9c75700..79c4695 100644
--- a/generator_museum.tscn
+++ b/generator_museum.tscn
@@ -3,15 +3,28 @@
 [ext_resource type="Script" uid="uid://dtbxopw6ulhl8" path="res://generator/currency_generator.gd" id="1_pl17p"]
 [ext_resource type="Resource" uid="uid://co0mcc2kvcpo5" path="res://generator/primary_generator.tres" id="2_x5lt1"]
 [ext_resource type="Resource" uid="uid://04pmc034qupd" path="res://generator/secondary_generator.tres" id="3_dc82g"]
+[ext_resource type="Texture2D" uid="uid://bgtt3wu43tajh" path="res://icon.svg" id="3_mhw8n"]
 [ext_resource type="PackedScene" uid="uid://ckos7f22pnmyh" path="res://generator_container.tscn" id="3_pw2a0"]
 [ext_resource type="PackedScene" uid="uid://btkxru2gdjsgc" path="res://currency_tile.tscn" id="3_x5lt1"]
 
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_y5m1q"]
+size = Vector2(128, 128)
+
 [node name="GeneratorMuseum" type="Node2D" unique_id=1219373683]
 
 [node name="GoldGenerator" type="Node2D" parent="." unique_id=964187690]
+position = Vector2(566, 455)
 script = ExtResource("1_pl17p")
 data = ExtResource("2_x5lt1")
 
+[node name="Sprite2D" type="Sprite2D" parent="GoldGenerator" unique_id=381586216]
+texture = ExtResource("3_mhw8n")
+
+[node name="Area2D" type="Area2D" parent="GoldGenerator" unique_id=2084873356]
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="GoldGenerator/Area2D" unique_id=726858258]
+shape = SubResource("RectangleShape2D_y5m1q")
+
 [node name="GemsGenerator" type="Node2D" parent="." unique_id=931294956]
 script = ExtResource("1_pl17p")
 currency = 1
@@ -52,3 +65,6 @@ offset_top = 215.0
 offset_right = 247.0
 offset_bottom = 380.0
 _generator = NodePath("../../GemsGenerator")
+
+[connection signal="mouse_entered" from="GoldGenerator/Area2D" to="GoldGenerator" method="_on_area_2d_mouse_entered"]
+[connection signal="mouse_exited" from="GoldGenerator/Area2D" to="GoldGenerator" method="_on_area_2d_mouse_exited"]
diff --git a/project.godot b/project.godot
index 2c6d2aa..08d72b0 100644
--- a/project.godot
+++ b/project.godot
@@ -18,6 +18,14 @@ config/icon="res://icon.svg"
 
 GameState="*uid://d2j7tvlgxr2jp"
 
+[input]
+
+click={
+"deadzone": 1.0,
+"events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":0,"position":Vector2(0, 0),"global_position":Vector2(0, 0),"factor":1.0,"button_index":1,"canceled":false,"pressed":false,"double_click":false,"script":null)
+]
+}
+
 [physics]
 
 3d/physics_engine="Jolt Physics"