These screensavers are from the old Nickelodeon Invader Zim Super Site. Unfortunately, and presumably because they are developed with Flash, I can't personally get them to work on modern Windows (10+). I'm including the .exe files of both but don't be surprised if they don't work. However, I have extracted the frames from both and recompiled them into both gif format and video format, so you can at see what they looked like! Additionally, with a more modern screensaver program like Video Screensaver, you can configure whatever video you like to run as a screensaver, including these. So there are workarounds, it's just slightly more complicated.

Screensaver #1
Screensaver # 2 (Content Warning: Flashing Images!)