There is a modern, non-Flash Zombotron on Steam developed by Anton Kravchenko. This version is not free, and it does not have a "hacked" mode. However, many users searching "Zombotron Hacked No Flash" confuse this with the original.
The original developer (Anton Karlov) and publisher (Armor Games Studios) released a full HD re-imagining of Zombotron on Steam. zombotron hacked no flash
To understand the demand for a "no Flash" version, you first have to appreciate the original series' deep history. Zombotron is an action-platformer series created by the solo Russian developer Anton Karlov, who later partnered with Armor Games Studios for publishing. The series began its life entirely within the Adobe Flash ecosystem. There is a modern, non-Flash Zombotron on Steam
The death of Flash was a tragedy for digital preservation, but thanks to emulators and passionate archivists, Zombotron lives on. You just need to know where to look and how to stay safe. The original developer (Anton Karlov) and publisher (Armor
Press ~ (tilde) in some hacked versions to bring up a debug console to toggle god mode manually.