Savages (1972) James Ivory

A tribe of primitive "mudpeople" encounter a croquet ball, rolling through their forest. Following it, they find themselves on a vast, deserted Long Island estate. Entering, they begin to become civilized and assume the stereotypical roles and dress of people at a weekend party. There follows an allegory of upper-class behavior. At last, they begin to devolve toward their original status, and after a battle at croquet, they disappear into the woods.

SAVAGES is about as surreal and strange as movies come, but not at all lacking in depth, substance, or humor(chiefly in a subtly saturnine, cynical vein). Certainly not suited to all tastes, but strongly recommended to those with a slant toward wry absurdist cinema.