It looks like 39-s might be a typo or encoding artifact — possibly Garry's Mod 12 SSR or something similar related to (the sandbox physics game by Facepunch Studios).
Let me know, and I’ll prepare the paper in the format you need (APA, plain text, Markdown, etc.).
I notice you’ve entered the search‑style phrase "garry 39-s mod 12 ssr" .