Added hidden card game.

game/scenes/UI/start_screen.gd

@@ -64,3 +64,6 @@ func _update_login_button() -> void:
 		_login_button.text = "LOG OUT"
 	else:
 		_login_button.text = "LOG IN"
+
+func _on_secret_button_pressed():
+	get_tree().change_scene_to_file("uid://q4abhlwqdvay")

game/scenes/UI/start_screen.tscn

@@ -90,6 +90,14 @@ size_flags_vertical = 4
 theme = ExtResource("1_tx5wa")
 text = "QUIT"
 
+[node name="SecretButton" type="Button" parent="."]
+show_behind_parent = true
+layout_mode = 0
+offset_left = 840.0
+offset_top = 142.0
+offset_right = 856.0
+offset_bottom = 159.0
+
 [node name="LogoutRequest" type="HTTPRequest" parent="."]
 unique_name_in_owner = true
 
@@ -97,4 +105,5 @@ unique_name_in_owner = true
 [connection signal="pressed" from="MarginContainer/CenterContainer/ContentVBox/VBoxContainer/StartButton" to="." method="_on_start_button_pressed"]
 [connection signal="pressed" from="MarginContainer/CenterContainer/ContentVBox/VBoxContainer/SettingsButton" to="." method="_on_settings_button_pressed"]
 [connection signal="pressed" from="MarginContainer/CenterContainer/ContentVBox/VBoxContainer/QuitButton" to="." method="_on_quit_button_pressed"]
+[connection signal="pressed" from="SecretButton" to="." method="_on_secret_button_pressed"]
 [connection signal="request_completed" from="LogoutRequest" to="." method="_on_logout_request_completed"]