HUGO: Hugo II Demo & Hugo III Demo do not work with paletted surface
Tested just the public demos so maybe this is not an issue in full version. When running the game, one can notice empty boxes in the top part of screen.
Console reports as many messages as there is empty boxes:
WARNING: PicButtonWidget::setGfx got paletted surface passed!
Not sure which backend except Atari uses 8-bit surfaces (opendingux/rs90?) so it may be tricky to test/reproduce. Maybe just easier to mark the engine as requiring 16-bit color support?