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SCP:SL Cassie Sounds

All Voice lines are from SCLP: Secret Laboratory. Proper credit is given to the creators of this content.

SCP Voice lines to use in your gmod server. When using this voice lines.


This pack is mostly meant for developers to leverage, using this without the needed code will not do anything.

There are over 1000 voice files, I tried my best to go over the files, and remove the non cassie voice lines but going over all the files is very time consuming, if there are voice files that are not cassie related, feel free to leave a comment. This is meant for a project I am working on, so some sounds are not cassie related


"C.A.S.S.I.E. is a text-to-Speech system that uses a Domain-specific synthesis, meaning that the speech is not generated in real time and is instead created by using pre-recorded words and phrases said by a human. The Text-to-Speech system simply makes announcements using those existing words and arranges them to make the sentence. This is similar to real life PA Systems often used in train stations or weather reports. C.A.S.S.I.E. is voiced by Narlor." ( SCPSLGAME, 2025-04-16[en.scpslgame.com])

This means in order to properly use this plugin, you must play the voices back to back, all files are just wav files.

For this playing back to back voice lines may take a heavy toll on the server, if you want to create a degree of separation, so your gmod server just needs to play a single sound file, I highly suggest you download the original content taken from r/SCPSL and create a python flask server, or nodejs server (whichever you prefer) and using code, stitch the content together.