This addon randomly places additional objects in the official campaign. You play the same official map all the time, don't you want something new every now and then? Wouldn't it be possible to change gaming experience, just by slightly changing the placeme...

This add-on blocks trick routes like shortcuts and spots that make zombies stupid. Using such tricks makes the game easier, but it's not fun, right? - Block routes that avoid events or skip events. - Block routes to reach points that zombies cannot access....

Now, You can see tanks in every round. You were itching to fight the tank, weren't you? For you like that, I have prepared an opportunity to experience more tanks in more places. (This add-on does not affect the finale.) chat command !tank_spawn If you don...

No more TANK BURGER. This add-on improves the tank's AI to a level that is more threatening to survivors. The major changes are as follows. - When the tank hits the survivor, the rampage motion is removed. - When the tank throws a rock, it frequently chang...

This add-on solves the problem that the spitter's acid spit does not spread over the props. That's how hard the game gets. Because the places you can avoid acid becomes fewer. Try using it with the Random Object Spawner! Because it's made for Random Object...

This add-on increases the difficulty of the game. Are you bored of doing the same thing every day in L4D? Then let's try a new challenge. This addon turns on/off alarms for cars on the map. You'd better forget about the familiar location of the alarm car. ...

This add-on increases the difficulty of the game. Is L4D too easy for you? Then let's try a new challenge. This add-on controls your chances of get ammo, so you need to change your gun to new gun frequently. It means that it becomes difficult to proceed to...

Once you've left, nowhere to go back. If you open the checkpoint door, the door will break. The only way to go is forward. Good Luck! < Original provided > https://forums.alliedmods.net/showthread.php?p=2700212 https://steamhost.cn/steamcommunity_com/sharedfiles/filede...

If using this add-on, the effects of Pain Pills/Adrenaline take effect slowly. Pain Pills/Adrenaline are no longer an immediate means of getting out of a crisis. Be careful, If you are incapacitated while the healing effect is occurring, the healing effect...

Let's make sure the fire's completely out! This add-on makes burning special infecteds a little more threatening. Attacks that touch their bodies deal extra flame damage. https://i.imgur.com/RXc8aRR.jpg Paypal for donations: If my works are helpful to you,...

This add-on will trigger a mob event when: - If the witch is not killed within 7 seconds of harassing the witch, mob event will occur. - In Chapter 3 of the No Mercy Campaign, When you blow up a gas station, mob event will occur. https://i.imgur.com/RXc8aR...

If you can't hunt, you will be hunted. This add-on improves the Hunter's AI to a level that is more threatening to survivors. The major changes are as follows. - Prevents claw attacks from shoved Hunters - When the Hunter pounces a survivor, nearby survivo...

Level the Next-level Charger. This add-on improves the Charger's AI, making it a much greater threat. Here are the major upgrades: - Charger now takes full damage even while charging (no damage reduction) - Charger breaks through obstacles more effectively...

Let the WITCH HUNT begin. This add-on improves the witch's AI to a level that is more threatening to survivors. The major changes are as follows. - Disallow throwable-idle exploit. - The witch's passing-by swipes deal actual damage. - The witch can break d...

Added a small unexpected event to decorate the finale of Hard Rain. While ChimiChamo looking through the dialogue list, he discovered a few of unused lines related to the finale of Hard Rain campaign. was about the Burger Tank sign that turned off. If it h...

If the door wasn't locked, they would have opened it themselves and come out. This addon provides a reasonable excuse for survivors waiting for rescue to you for help: That door won't open from the inside. Features - To open the door to the room where the ...

What is this? and Why? This is a common library package that must be subscribed to in order to properly use add-ons created by Manacat. Previously, every each addons i made contained the common script parts. but, as the number of addons increased, it becam...