Third-party archives are frequently used to distribute Trojans or miners. Because you must often disable antivirus software to run "cracks," your system is left vulnerable.
Services like ACA NEOGEO provide pixel-perfect ports of the original arcade experiences.
Downloading paid software from unofficial sources is copyright infringement. Furthermore, it denies revenue to the original creators who maintain the series today. Better Alternatives
These versions are often "stripped," meaning music, cinematic cutscenes, or multiplayer features might be removed to keep the file size small.
The games are available on the Nintendo Switch, PlayStation, and Xbox stores, often for a few dollars during sales.