diff --git a/game.tscn b/game.tscn
index 4e81701..8995bf5 100644
--- a/game.tscn
+++ b/game.tscn
@@ -186,7 +186,6 @@ disabled = true
 text = "Play Card"
 
 [node name="BetContainer" type="VBoxContainer" parent="HBoxContainer/GameUI"]
-visible = false
 layout_mode = 1
 anchors_preset = 2
 anchor_top = 1.0
@@ -197,7 +196,10 @@ offset_right = 327.0
 offset_bottom = -114.0
 grow_vertical = 0
 
-[node name="BetInput" type="LineEdit" parent="HBoxContainer/GameUI/BetContainer" node_paths=PackedStringArray("submit_button")]
+[node name="DisallowedBetLabel" type="Label" parent="HBoxContainer/GameUI/BetContainer"]
+layout_mode = 2
+
+[node name="BetInput" type="LineEdit" parent="HBoxContainer/GameUI/BetContainer" node_paths=PackedStringArray("error_label", "disallowed_bet_label", "submit_button")]
 layout_mode = 2
 max_length = 2
 context_menu_enabled = false
@@ -207,12 +209,18 @@ shortcut_keys_enabled = false
 middle_mouse_paste_enabled = false
 drag_and_drop_selection_enabled = false
 script = ExtResource("4_vef74")
+error_label = NodePath("../ErrorLabel")
+disallowed_bet_label = NodePath("../DisallowedBetLabel")
 submit_button = NodePath("../SubmitBetButton")
 
 [node name="SubmitBetButton" type="Button" parent="HBoxContainer/GameUI/BetContainer"]
 layout_mode = 2
 text = "submit bet"
 
+[node name="ErrorLabel" type="Label" parent="HBoxContainer/GameUI/BetContainer"]
+layout_mode = 2
+theme_override_colors/font_color = Color(1, 0.21, 0.21, 1)
+
 [node name="Label" type="Label" parent="HBoxContainer/GameUI"]
 visible = false
 layout_mode = 1
@@ -303,6 +311,7 @@ playing_card_scene = ExtResource("6_eow3j")
 [connection signal="new_round_started" from="WebClientTCP" to="EnvironmentManager" method="_on_web_client_tcp_new_round_started"]
 [connection signal="notify_play_card_request" from="WebClientTCP" to="HBoxContainer/GameUI" method="_on_web_client_tcp_notify_play_card_request"]
 [connection signal="received_bet_request" from="WebClientTCP" to="HBoxContainer/GameUI" method="_on_web_client_tcp_received_bet_request"]
+[connection signal="received_bet_request" from="WebClientTCP" to="HBoxContainer/GameUI/BetContainer/BetInput" method="_on_web_client_tcp_received_bet_request"]
 [connection signal="received_chat_message" from="WebClientTCP" to="HBoxContainer/ClientInterface" method="_on_web_client_tcp_received_chat_message"]
 [connection signal="received_client_id" from="WebClientTCP" to="EnvironmentManager" method="_on_web_client_tcp_received_client_id"]
 [connection signal="received_connection_message" from="WebClientTCP" to="HBoxContainer/ClientInterface" method="_on_web_client_tcp_received_connection_message"]
diff --git a/number_input.gd b/number_input.gd
index 4b4a975..735cd77 100644
--- a/number_input.gd
+++ b/number_input.gd
@@ -4,14 +4,35 @@ extends LineEdit
 ## Only allows numeric input, discards everything else.
 
 var _regex: RegEx = RegEx.new()
+var _disallowed_bet: String = "3"
+@export var error_label: Label
+@export var disallowed_bet_label: Label
 @export var submit_button: Button
 
 func _ready() -> void:
 	_regex.compile("[^\\d]")
 	submit_button.disabled = true
 
+func set_disallowed_bet(bet: int) -> void:
+	_disallowed_bet = str(bet)
+
 func _on_text_changed(new_text: String) -> void:
-	if new_text.is_empty() or _regex.search(new_text):
+	if new_text.is_empty():
 		submit_button.disabled = true
+		error_label.text = ""
+	elif _regex.search(new_text):
+		submit_button.disabled = true
+		error_label.text = "Numbers only!"
+	elif new_text == _disallowed_bet:
+		submit_button.disabled = true
+		error_label.text = "Not allowed!"
 	else:
 		submit_button.disabled = false
+		error_label.text = ""
+
+func _on_web_client_tcp_received_bet_request(disallowed_bet: int) -> void:
+	set_disallowed_bet(disallowed_bet)
+	if disallowed_bet == -1:
+		disallowed_bet_label.text = "Bet anything"
+	else:
+		disallowed_bet_label.text = "Disallowed bet: {bet}".format({"bet": disallowed_bet})