That is so cute. I've made a version of Black Widow for PC & Mac and I would never have dared trying to put it on the Vectrex - as I would without doubt have tried to cram too much in - but SpideX seems to keep the core gameplay, but just downscaled to work on the Vectrex. Well done.
My own remake of Black Widow is here btw: http://tardis.dk/wordpress/?page_id=445
My own remake of Black Widow is here btw: http://tardis.dk/wordpress/?page_id=445