Hi @ninjapandaz
Eye tracker is not really meant to be a mouse replacement unless we are talking about a fully hands-free assistive use case.
But you can use Tobii Unity SDK to get the gaze data and then raycast it into the scene:
https://developer.tobii.com/pc-gaming/unity-sdk/api-overview/#gaze-point-data
https://gaming.tobii.com/games/pavilion/
For some 2D games (for example, card games), it might be a good idea to use Interaction Library instead of the Unity SDK:
https://developer.tobii.com/product-integration/interaction-library/