Use a search engine to look for "otomi-games.com_C89FAIZ4.rar" directly, as the documentation may be in a forum post or blog article.
To find the "paper" (documentation, manual, or paper) associated with this specific file: otomi-games.com_C89FAIZ4.rar
Disclaimer: Be cautious when downloading and extracting files from websites, ensuring they are from a trusted source. If you can tell me: Use a search engine to look for "otomi-games
Extract the .rar file to look for a readme.txt , documentation.pdf , or similar file inside the archive. or similar file inside the archive.