Unity (former game engine company) has merged with an actual adware and malware distribution company. That's not an exaggeration. Fake Flash installers, was blacklisted by Microsoft's anti-malware tool, VirusTotal entires, that kind of thing.

https://blog.infostruction.com/2018/10/26/adware-empire-ironsource-and-installcore/

https://www.benedelman.org/news-021815/

Don't build your games on engines you don't have the source code to.

Adware Empire - IronSource and InstallCore

A recent Adware campaign using malicious Bing ads led me to a Chrome download that eventually deployed Adware to the user’s computer. The IPs and types of Adware connected back to IronSource Ltd., Babylon Software Ltd., and InstallCore – all Israeli companies that have connections to Adware. See her

INFOSTRUCTION
damn if only someone had warned us about the dangers of proprietary software

imagine how different things could have been
@fluffy open source games are generally not economically viable because anyone can just rerelease your game for free
sounds like you're reciting something you heard elsewhere. renpy is MIT, nekopara has sold 5 million copies
@fluffy the game isn’t open source, which is what I thought you were including in your statement about proprietary software
This is a thread about game engines. you have misconstrued my statement if you meant it to be about anything else