Plummet

Ever found other RPGs lacking because of absent or lacklustre rules for falling damage? Worry no more! Plummet dedicates a higher proportion of its ruleset* to elaborate, scientifically-referenced falling mechanics than any other roleplaying game. Whether your characters are jumping off balconies with no trousers to avoid the vicar, or plunging over icy cliffs pursued by angry Plutonians, you'll find what you need.

*100%

(not intended as a jibe at anyone; I was mildly amused by the thought of an RPG that only had rules for falling damage, so I wrote one, that's all)