Pure classic Unity excellence still holding up to Unity 2022. You basically get a functional game out of the box. Its showcasing the AI system nicely with various zombies , even ones that can shoot projectiles. I can't wait to implement this in my FPS game. Reason I rated it 4/5 for now is because I haven't battle tested it. Also need to confirm if different surface height is gonna be an issue. If you want to build a cool top down shooter, you can even modify this. It's more than just AI inside.

so i know its from like 10 years ago and i didnt fully expect it to work but it did. the only reason im rating it a 4 versus a 5 is because theres no 2d to my knowledge and thats a deal breaker for me. worked great in 3d though once i replaced a few materials

If going mad i guess you can even make player draw grid out of crumbs, so that will allow to find you on any height. Or cast something like an detection aura around the player.

There are some tag problem need to fix to make it work, I don't know why unity can't use Breadcrumb as tag name in script, anyway just rename it in all script make it work. You don't need navmesh to make it work, so the performance are great!

AI is very difficult, and this is very easy but also a little complicated, the perfect combination for young or beginning devs!

This is good AI. But i using this AI with Unity Editor 2019.3.13f1, the demo scene going to crash after few minutes. I don't know why?

Not working with Unity 2019.3.14f1

very good job .... thanks for sharing

Simple code, nicely commented and best of all it works! Thank you for your work!

With a few teaks on the Rigidbody class and the usage of it it can be a very simple but powerful ai navigation tool for npcs, and the demo also help me to get other project to work... [for the author: if you can help to implement on Oculus go project will leave 4 stars :)]