
Unity Movement AI : A library of steering behaviors to help your NPCs move around your game. TopDown AI : This is an example of Top Down Shooter AI.
Panda BT Free : Panda BT is a script-based Behaviour Tree engine which allows the authoring of complex, scaleable and reusable logic for your game. Goap : Goal oriented action planning AI in Unity. Crystal AI : A Utility based AI for C# and Unity (can only use free version in free games).
Behavior Bricks : Behavior Bricks is a state-of-the-art engine for Behavior Trees (BTs) along with an intuitive visual editor.You may also be interested in taking a look at the quality assets that I use regularly to create my scenes – best of the best environmental unity assets.