The motion detector is cool, however, not sure how useful it would be as you can already see aliens coming around the corner. And if you knew there were aliens behind doors it would take a bit of the suspense away.
I think the map should just be a line drawing of the bits you've been to, don't include the non vizzed stuff.
I think the map should just be a line drawing of the bits you've been to, don't include the non vizzed stuff.