Alien Swarm: Reactive Drop bill mods

Everything filed under bill by its own author, ordered by how much it is used.

1 bill mods, most downloaded first · newest update 10 Feb 2026

All challenge281 skin247 Sound170 Weapons142 Marine141 campaign116 model102 prototype rifle89 Assault Rifle87 heavy rifle82 Music80 vindicator79 Autogun79 combat rifle76 marksman rifle75 bulldog72 Weapon70 devastator62 Deagle59 shotgun57 HUD53 Sounds52 Models47 Bonus45 Grenade Launcher43 halo42 UI40 7:7634 replacement33 ASBI30 survival29 Texture27 Minigun24 Config24 Blue Archive21 Glow19 Voice19 Space18 Dead Space18 flag18 alien18 Railgun17 Drone16 Particles16 marines15 animated15 Flamethrower14 Crosshair14 Chainsaw14 Meme13 Combine13 Background12 particle12 Half Life12 rifle12 Ammo12 Horde11 Challenges11 blue11 warframe11 Custom11 emote10 Adrenaline10 Grenade10 Textures10 Color10 aliens10 Swarm10 faith10 Skins9 Arrow9 Soundtrack9 Emotes9 Audio9 VGUI9 Fun8 Glowing8 Effect7 Starcraft7 loading7 crash7 menu7 Barrel7 Training7 Max Payne6 Loading Screen6 Anime5 fix5 Guns5 Interface5 Red5 Gun5 Escape5 health5 Medkit5 gunshot5 modding5

1 bill mods

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L4D Character Pack (Beta)by EddieboyThe Left 4 Dead cast is here! This massive addon brings all the survivors to Alienswarm as fully playable characters. Build your team by mixing and matching your favorite survivors to face off against a new kind of horde. This includes the following: (Nearly) Full voice replacements for the exist...7.8k downloadsupdated 9 mo ago

Only one so far. It has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.