Niantic, famous for developing games like Pokemon GO, has released an Augmented Reality Developer Kit (ARDK) for people who want to build AR games. The ARDK is available for free and allows developers to build upon Niantic's core technologies.
https://www.notebookcheck.net/Pokemon-GO-creator-Niantic-envisions-a-real-world-metaverse-as-it-releases-an-AR-Developer-Kit.577915.0.html