You can find the Zombotron Re-Boot demo or full versions through official developer links.
If you specifically want the original " Zombotron 2: Time Machine " (often mistaken for Zombotron 3), you can download the .swf files from the official Zombotron website and play them using a standalone Flash player like Flashpoint or the Internet Archive . Minimum System Requirements (Re-Boot) Zombotron Re-Boot | Download and Play on PC igra zombotron 3 skachat na kompiuter
This is the official modern release that includes the content of the original three Flash games. You can find the Zombotron Re-Boot demo or