I use elements of John Boorman's Excalibur as my primary visual reference - namely the parts before Excalibur is found and after it's lost. Wild-eyed knights in dirty plate armour, brutal combat and dark, folkloric sorcery informs much of the setting as I read it.
It's funny, for some reason I never thought to link the two films. Unless I'm misremembering, they even use some of the same music.
In system terms it plays like early Basic D&D without the steep power curve. The fighting classes start at around twelve hit points and gain only one point per level thereafter.
I was going to say something about this but I've only read through the rules once and I wasn't sure. I've noticed this is a common feature of early D&D follow-ons--give about 2-3x the HP at first level, but then a slower rate of increase after that.
BTW the rules used to be available at Home of the Underdogs, but that site has gone down not long ago. (About which more
here.)