I was installing Riven, and it asked me to install this. Which I did.

Now, I already had a regular version of Quicktime. But to be honest, I didn't know if whether Riven, being as old as it is, needed a specific version. I mean, I don't think it replaced my regular Quicktime app but rather is on the side.

So, my question is, will it screw up my normal Quicktime, and games that already ran with that to begin with? I know I shouldn't install something if I'm not entirely sure. But at the time I wasn't thinking. Though I believe I can still delete it if there are problems.

Not to mention, I doubt GOG (Which sells games for modern computers) would ask me to install something that would mess up things I mean it's not like I'm installing an "Original" copy of Riven for Windows 3.1/ 95 which would ask me to install a beyond primitive version of Quicktime or something like that ^^; but I am still very paranoid I did something wrong.

It shouldn't screw anything up, and yes, Quicktime has changed so much that an application calling functions from Quicktime 4 likely won't work with current versions.

Then again, you already installed it, and I assume your Quicktime 7 still works fine, then nothing's messed up.

Thank you :3

I assumed that Riven is so old, that perhaps it possibly isn't compatible with modern quicktime applications. So Quicktime Lite 4.1 was maybe an emulator if anything?

Not quite. It's not an official package, but is made up of (among other things) parts from the actual Quicktime 4 package - it just strips out everything that isn't strictly necessary (and lets Quicktime files be played in Windows Media compatible players rather than being limited to Quicktime Player).

I've found it fairly common for old games containing videos to require a specific version of Quicktime. I'm yet to experience any problems from installing an old version alongside more current version(s).

It's a while since I had to do it, but from memory the older Quicktime is listed as a separate entry in your installed programs list, and so can be safely uninstalled when you have finished using it.