If you want to build immersive gaming experiences with head and eye tracking, Tobii is a good option. Tobii has a range of products and services including eye trackers, data analysis and app development tools and integration with XR headsets and PCs. Its consulting services can help you get set up and integrate products, so it's a good one-stop-shop for eye tracking in gaming.
Another option is Convai, an embodied AI character creation platform that can handle real-time voice input and scene understanding. It lets developers create conversing, walking, thinking characters in game worlds, so it's a good choice for creating a compelling in-game experience. It's designed to work with game engines and has flexible pricing for different business models.
If you want to turn 2D imagery and video into immersive 3D, Immersity AI is worth a look. It uses a Neural Depth Engine to generate detailed depth maps so you can convert 2D imagery into 3D and preview it on XR headsets. It's a good way to make gaming more immersive, and you can use its APIs to build it into your own apps.