Little-known anti-malware programs display warnings, which are often identified as false positive. Nevertheless, it is recommended to recheck the file with your antivirus software after downloading.
We do not have a download file for the latest version (20.0.4), but you can try downloading it from the developer's site
Download version 10.3 from Mac Informer
Version: 10.3
Date update: Feb 15, 2012
File name: crossover-games-demo-10.3.0.dmg
Size: 55.8 MB
