Dota 2 mega-kill packs
The line that plays on a double kill and everything above it. Sound only: nobody else in the match hears yours.
The D2PFX catalog has 36 mods in this category. Each changes what you see on your own screen; everyone else sees their own game.
Stariy Bog Mega-Kill
CS 1.6 Mega-Kill
Umbrella Mega-Kill
Stray228 Mega-Kill
Hestia
Chitoge Kirisaki
Iroha Isshiki
Axe
Bristleback
Clockwerk
Crystal Maiden
Dark Willow
Darkest Dungeon
Defense Grid
Deus Ex
Diretide
Fallout 4
Gabe Newell
GLaDOS
Juggernaut
Kunkka & Tidehunter
Lina
Meepo
Monkey King
Natures Prophet
Nedotrax Mega-Kill
Pirate Cap
Pyrion Flax
Rick & Morty
Ru GLaDOS
Siega Mega-Kill
Stanley Parable
Storm Spirit
Techies
Trine
Voice of The International
Installing any of these
Open Dota 2 Mod Manager, find the hero, press Install. The app puts the file in a free pak slot in the folder your game mounts, tells you when two mods carry the same file, and puts everything back after a Dota patch. The full guide, or the manual route if you would rather do it yourself.