Uncle Neighbor Adult DLC CGs
This's not game, it's just CG(computer graphics, some kinds of image) of a game. it's not for playing, only for viewing.

I Can't Wait to be a Class Rep
♺ Tims Terrible Tuesday-0.98 [PC]
Short answer: The file format is ISO, so use any DVD emulator (eg. DAEMON Tools/Virtual CloneDrive/WinCDEmu/etc) to load the ISO file and install game. using zip tool eg. 7zip to unzip it is also fine.
Long answer: How to Install an ISO Game File on a Windows PC: 6 Steps

Check comments to see if anyone says there's virus. check yourself using https://www.virustotal.com/gui/   :hug2:

thanks!!!

I Can't Wait to be a Class Rep
♺ Tims Terrible Tuesday-0.98 [PC]
Short answer: The file format is ISO, so use any DVD emulator (eg. DAEMON Tools/Virtual CloneDrive/WinCDEmu/etc) to load the ISO file and install game. using zip tool eg. 7zip to unzip it is also fine.
Long answer: How to Install an ISO Game File on a Windows PC: 6 Steps

Check comments to see if anyone says there's virus. check yourself using https://www.virustotal.com/gui/  :hug2:

so people have been uploading GAMES (i'm very sorry I don't know the correct term)
I mean some are posted as DLC. Basically you control a character and they have sex within the game.

Now I'm ASSUMING this because every time I download one, it has a weird file type and I really don't know what to do with the file in order to play it.

Can anybody give a brief summary of what we are supposed to DO with those files?

In relation to your question…
Those are known as Anime Games / Application [Software]…
You need to install them or find the right program to play them properly [search web for a file type]…
In most cases some have malicious files/content attached to it so be careful not to download...

or

https://www.gaytor.rent/details.php?id=d15c565fb7143865fcc0bb34fc825988fa1c48b90a8bef13

or

https://www.gaytor.rent/details.php?id=c9afc608e406cc47fcc0bb34fc8259881aab51800cc7fc78

just games like these