I was trying to install a repack of The Sims 3 with all of the expansions, full size about 31 GB, onto a drive that had about 300 GB of free space. Left it running overnight, woke up to my computer completely locked up because the repack had filled every single bit on my SSD.

Recovered my computer, verified the download according to the instructions on the Fitgirl site, tried again. This time I let it run for about an hour, at which point it had created a 150 GB folder. I cancelled the install, and then found that it was still filling up my SSD until I killed all twelve "fgrepack" processes that the installer had created.

This was on Linux, using Bottles. I've installed Fitgirl stuff using this method before without issues.