This was probably the most fun programming-style puzzle game I ever played. And, it doesn't even require any traditional programming skills or knowledge, as everything is done via a GUI design where you are wiring together various engine parts, weapons, sensors, etc. in appropriate ways to define the correct functioning. I had endless hours of fun replaying the various levels (and longing for more), and tweaking my vehicle designs to try to improve their functioning. It was one of the early Linux game ports, and that's why I initially bought it, as I was supporting just about all games released on Linux at the time. I kept it installed across multiple computer upgrades for years until eventually losing it in an upgrade at some point long ago. I miss it and would love the chance to play it again. It is just criminally underrated. Almost no one else I know has ever even heard of it until I tell them about it.