New features and plenty of code still in testing. This includes a level select, basic inventory, and a basic HUD.

GUI/Splash Screen.gd

@@ -0,0 +1,29 @@
+extends Sprite
+
+signal complete
+
+
+func _ready() -> void:
+    # Fade in
+    if not $Tween.interpolate_property(self, 'self_modulate:a', 0, 1, 3, Tween.TRANS_LINEAR, Tween.EASE_IN):
+        print('ERROR: Splash Screen fade in animation has errors.')
+    if not $Tween.start():
+        print('ERROR: Splash Screen fade in animation failed to start.')
+
+    yield($Tween, 'tween_completed')  # Wait for fade in to complete
+
+    # Fade out
+    if not $Tween.interpolate_property(self, 'self_modulate:a', 1, 0, 3, Tween.TRANS_LINEAR, Tween.EASE_OUT, 2):
+        print('ERROR: Splash Screen fade out animation has errors.')
+    if not $Tween.start():
+        print('ERROR: Splash Screen fade out animation failed to start.')
+
+    yield($Tween, 'tween_completed')  # Wait for fade out to complete
+    emit_signal('complete')
+    return
+
+
+func _input(event: InputEvent) -> void:
+    if event.is_action_pressed('ui_accept'):
+        emit_signal('complete')
+    return