The Local Bird-Brain
It's a small mod, but it's one I like a ton! Having a sound cue for when you land and can jump again is nice, and it's nice having some extra and dare I say "immersive" sounds in the game. Also really like how you added in extra step effects, the Half-Life 2 ones fit really well- and I have a major soft spot for Ocarina of Time's effects. I do wish it would save what you picked though after closing and reopening the game.