IGG is a cracking group with a mixed reputation. Early on they distributed malware, which continues to give them a negative reputation. Though, I haven’t heard of anything bad about them, in some time… some repackers also use their cracks, with no issues. I think they were the first that cracked the latest Armoured Core, for example.

Probably crypto miners or remote access.

Haha cheers!

IGG is very toxic website that has a history of adding various types of malware (both web and games), including cryptominers.
It's higher on that list, even though for some reason it only highlights the (barely coherent) silliness that it has DRM.

I'm not know the nosteam website, it's odd that they mention it on the list but it's not listed.

IGG /nosteam uploads presumably means that they are the sources of the games. I don't know a huge amount about game piracy, but it sounds like IGG / nosteam are not trustworthy.

Nah they call it pre-installed because you don't have to run an installation wizard yourself, which requires administrator permissions. So you could play those games on computers where you don't have admin access, like a school or work laptop