Check the root folder after extracting for a Readme.txt or a .exe file.
Users on communities like r/PiratedGames have reported issues with "wrong" download buttons on the site leading to small .rar files (around 18MB) containing malware rather than the actual game (which is usually several GBs). [Ryuugames] RY-222563.rar
Always run unknown files through VirusTotal before executing. Check the root folder after extracting for a Readme
The title is often visible in the "Game Info" section of the site where you found the link. 2. General Setup Instructions MV) for it to boot.
If the game is made in RPG Maker, you may need to install the specific RTP version (e.g., VX Ace, MV) for it to boot.