[L4D2] SI Limit Remover

[L4D2] SI Limit Remover

Remove the annoying SI Limit on Left 4 Dead 2.

Author(s): Marcus101RR, DDR Khat

Game Type: Left 4 Dead 2

Game Version:

Plugin Version: 1.0

Difficulty: ★★★★☆


[I]Initial Version Public Release was on April 5th, 2012.

Servers Using This Plugin



SI Limit Remover brings back the original Director System from Left 4 Dead. In the earlier version of Left 4 Dead, Infected Spawns would be increased to any amount depending on the server configurations. Valve initiated a Network Overhaul to Left 4 Dead 2 and thus, A SI Limiter, to prevent massive latency on servers for massive activity and Processor usage. However, not much has changed over the years from Left 4 Dead to Left 4 Dead 2. There are no problems showing servers cannot handle more SI on the battlefield. This Modication returns the feature.

Plugin or Modification

Though this is not a Plugin (SMX, AMX, or SP) file that belongs or functions with SourceMod, this Modication still doesn't work properly without the usage of Super Versus 1.6, & Human Director Reloaded, a customized version that features multiple plugins including: Tank HP Set, Team Panels, On-Join Bot Creator, & Flexible SI Control. Without this modification, SI would be completely controlled by Valve's original variables listed below:

Valve SI Control Variables








Recommended Plugin

The recommended plugin to use with this Modification is Super Versus 1.6. A special version designed for this modification. This will improve SI Control Limits on your server, this plugin can be disabled to allow more players to join via its config file.


Extract the Zip File within the Root Directory of Left 4 Dead 2 (Default: C:\Program Files\Steam\steamapps\common\left 4 dead 2). The directory is already setup within the Zip File. These files overwrite the script files located within the VPK file of that specific folder. Also, they do not overwrite the actual files, only the sequence of loading. This means, the modified *.nut files will be loaded first before the original Valve versions. To remove the modification, simply delete the files from that location.

Video, Screenshots, & Visuals

Frequently Asked Questions & Solutions

Q: Can I remove/disable certain SI from spawning?

A: Yes, use the variables above and set it to 0 to prevent a specific SI from spawning within your server permanently.

Q: Isn't this the same as Hard Eight?

A: No, Hard Eight is a mutation. It modifies the amount of infected only for the Mutation itself, Coop and Mutation are two different gamemodes and act separately from themselves. The Variables are unaffected in Mutation "Hard Eight", as they are stored within the gamemode.txt file. This essentially brings Hard Eight to Coop mode, however, the server owner can control everything from spawn amounts to spawn times.

Q: Does this affect Versus Mode?

A: No, Versus Mode and related Modes use different variables to control SI Limits. If you wish to use higher Versus Mode limits, you must use Super Versus. You do not need this modification to increase SI Limit for Versus.

Q: This isn't a plugin, why is it here?

A: Correct, it is not a plugin, however, it depends on a plugin in order to use the full effect of its resources. This increases and removes the limiter from Left 4 Dead 2, however, you will still needs Super Versus 1.6, or related plugins to force the initial Infected Limit amount for your server.

Q: What if I want only 4 infected, and random amounts of SI Classes?

A: Using z_hunter_limit, and z_smoker_limit as an example. Setting both of these to 4, along with the maximum infected allowed on the field using "z_max_players_zombies" will allow you to do this. The Director will utilize 16 maximum combinations of infected, however, no more than 4 infected will appear, of those, only a maximum of 4 hunters or smokers can appear at once.

Attached Files

File Type: zip

left4dead2_dlc1.zip (4.2 KB)

File Type: sp

Get Plugin or
Get Source (l4d_superversus.sp - 31.7 KB)

Orignal From: [L4D2] SI Limit Remover

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