Do not use random pop-up laden sites. Stick to community-vetted archives:

Websites like Phoneky or Dedomil are the primary repositories for these old .jar files. They typically allow you to filter by resolution (320x240) and specific handset models (like the Nokia N95 or BlackBerry Bold).

Distributing copyrighted games commercially is illegal. However, abandonware communities argue that since these games are no longer sold or supported by Sony/Marvel, they exist in a legal grey area for archival and preservation purposes.